嶢 免版税库存录像

1,591,665 嶢 免版税库存视频

查看 嶢 库存图片
共 15,917 页
4k00:12Connected San Francisco skyline. Financial District at dusk. Aerial view. California, United States. Futuristic network. Technology. Shot from helicopter.
Connected San Francisco skyline. Financial District at dusk. Aerial view. California, United States. Futuristic network. Technology. Shot from helicopter.
hd00:40Top View of the Giant Waves, Foaming and Splashing in the Ocean, Sunny Day, Slow Motion Video, Indonesia, Bali
Top View of the Giant Waves, Foaming and Splashing in the Ocean, Sunny Day, Slow Motion Video, Indonesia, Bali
4k00:19Four young adult friends watching sports on TV celebrating
Four young adult friends watching sports on TV celebrating
4k00:13Aerial top down view of Manhattan skyscrapers in New York during the day under blue skies in summer. Wide shot on 4K RED camera.
严选
Aerial top down view of Manhattan skyscrapers in New York during the day under blue skies in summer. Wide shot on 4K RED camera.
4k00:10Self Driving Autopilot Autonomous Cars 4K
Self Driving Autopilot Autonomous Cars 4K
4k00:15Blue sky white clouds background timelapse. Beautiful weather at cloudy heaven. Beauty of bright color, light in summer nature. Abstract fluffy, puffy cloudscape in air time lapse. High sunny cumulus.
Blue sky white clouds background timelapse. Beautiful weather at cloudy heaven. Beauty of bright color, light in summer nature. Abstract fluffy, puffy cloudscape in air time lapse. High sunny cumulus.
4k00:11In the Secure High Level Laboratory Scientists in a Coverall Conducting a Research. Chemist Adjusts Samples in a Petri Dish with Pincers and then Examines Them Under Microscope.RED Cinema Camera
严选
In the Secure High Level Laboratory Scientists in a Coverall Conducting a Research. Chemist Adjusts Samples in a Petri Dish with Pincers and then Examines Them Under Microscope.RED Cinema Camera
4k00:25Space Shuttle Launch. Realistic 3D Animation. 4K. Ultra High Definition. 3840x2160.
Space Shuttle Launch. Realistic 3D Animation. 4K. Ultra High Definition. 3840x2160.
4k00:14Servers close up. Modern datacenter. Cloud computing. Loopable 8k 4k UHD Server in datacenter. Cloud computing data storage 3d rendering. 8k 4k closeup loopable animation
Servers close up. Modern datacenter. Cloud computing. Loopable 8k 4k UHD Server in datacenter. Cloud computing data storage 3d rendering. 8k 4k closeup loopable animation
hd00:12Background gold movement. Universe gold dust with stars on black background. Motion abstract of particles. VJ Seamless loop.
Background gold movement. Universe gold dust with stars on black background. Motion abstract of particles. VJ Seamless loop.
4k00:25Top view aerial video of development infrastructure city for big population, modern skyscrapers and tall edifices of megapolis, urban transportation system. Video can be used for film or advertising
Top view aerial video of development infrastructure city for big population, modern skyscrapers and tall edifices of megapolis, urban transportation system. Video can be used for film or advertising
4k00:38Ink in water. Slow Motion. Shot with high speed camera, phantom flex 4K. Slow Motion.
Ink in water. Slow Motion. Shot with high speed camera, phantom flex 4K. Slow Motion.
hd00:35Cloudy time lapse, Seamless Loop Clouds,Towering Cumulus Cloud Billows Time Lapse, Seamless, Beautiful white cloudscape soar across the screen in time lapse fashion over a deep blue background. FHD.
Cloudy time lapse, Seamless Loop Clouds,Towering Cumulus Cloud Billows Time Lapse, Seamless, Beautiful white cloudscape soar across the screen in time lapse fashion over a deep blue background. FHD.
4k00:11 futuristic digital processing of biometric fingerprint scanner. concept of surveillance and security scanning of digital programs and fingerprint biometrics. cyber futuristic applications.
futuristic digital processing of biometric fingerprint scanner. concept of surveillance and security scanning of digital programs and fingerprint biometrics. cyber futuristic applications.
4k00:05Abstract Hexagon Geometric Surface Loop 1A: light bright clean minimal hexagonal grid pattern, random waving motion background canvas in pure wall architectural white. Seamless loop 4K UHD FullHD.
Abstract Hexagon Geometric Surface Loop 1A: light bright clean minimal hexagonal grid pattern, random waving motion background canvas in pure wall architectural white. Seamless loop 4K UHD FullHD.
4k00:37Crisp french fries dropping next to juicy cheeseburger on plate with sauce in ultra slow motion with 4k Phantom Flex camera
严选
Crisp french fries dropping next to juicy cheeseburger on plate with sauce in ultra slow motion with 4k Phantom Flex camera
4k00:3914 futuristic transition masks. Blocky textured displacement maps for HUD design. High technology interface appearance.
14 futuristic transition masks. Blocky textured displacement maps for HUD design. High technology interface appearance.
4k00:06cruce de personas, Mexico City, Timelapses
cruce de personas, Mexico City, Timelapses
4k00:23Young multi ethnical graduates in caps laughing out loud and having fun on their graduation day. Outdoors. Close up
Young multi ethnical graduates in caps laughing out loud and having fun on their graduation day. Outdoors. Close up
hd00:07Rear view of man in formal suites who stand in front of panoramic window with city view. a man stands in front of big panoramic wiindow view from back.
Rear view of man in formal suites who stand in front of panoramic window with city view. a man stands in front of big panoramic wiindow view from back.
4k00:11The Concept of: Digitalization of Information Flow Moving Through the High-Tech Modern Electronics Manufacturing Factory Full of Computerized Automatic Machinery. Shot on RED EPIC-W 8K Helium Cinema.
严选
The Concept of: Digitalization of Information Flow Moving Through the High-Tech Modern Electronics Manufacturing Factory Full of Computerized Automatic Machinery. Shot on RED EPIC-W 8K Helium Cinema.
4k00:30Stars fly past the viewer against a backdrop of clouds and gas in space 4k, UHD, 3840x2160
Stars fly past the viewer against a backdrop of clouds and gas in space 4k, UHD, 3840x2160
4k00:20Shot on 4k RED camera on helicopter. Top down aerial view of tall buildings and city streets in New York City.
严选
Shot on 4k RED camera on helicopter. Top down aerial view of tall buildings and city streets in New York City.
4k00:15Aerial view of Central Park and Manhattan skyine in New York during the day under blue skies. Wide shot on 4K RED camera.
严选
Aerial view of Central Park and Manhattan skyine in New York during the day under blue skies. Wide shot on 4K RED camera.
4k00:15Aerial view of the East River and Roosevelt Island, New York City, dark sunset lighting with Futuristic network and technology. Wide shot on 4k RED camera on helicopter
严选
Aerial view of the East River and Roosevelt Island, New York City, dark sunset lighting with Futuristic network and technology. Wide shot on 4k RED camera on helicopter
4k00:09Professional Female Architect Wearing Makes Gestures with Augmented Reality Headset, Shows Statistics for 3D City Model. High Tech Office Use Virtual Reality Modeling Software Application.
严选
Professional Female Architect Wearing Makes Gestures with Augmented Reality Headset, Shows Statistics for 3D City Model. High Tech Office Use Virtual Reality Modeling Software Application.
4k00:10colorful waveform, imagination of voice record, artificial intelligence
colorful waveform, imagination of voice record, artificial intelligence
4k00:10Inferno fire wall in slow motion with seamless loop isolated, hell fire burning up, shooting with high speed camera, intense fuel blazing, perfect for digital composition.
Inferno fire wall in slow motion with seamless loop isolated, hell fire burning up, shooting with high speed camera, intense fuel blazing, perfect for digital composition.
4k00:18Cityscape of Paris. Aerial view of Eiffel tower in sunny day
Cityscape of Paris. Aerial view of Eiffel tower in sunny day
4k00:12Aerial, edited - Silhouette of a couple giving each other a high five celebrating successful climb on the mountain in beautiful sunset
Aerial, edited - Silhouette of a couple giving each other a high five celebrating successful climb on the mountain in beautiful sunset
4k00:20Epic Aerial Flight Through Mountain Clouds Towards Sunrise Beautiful Morning Peaks Inspirational Motivational Nature Background UHD 4K
Epic Aerial Flight Through Mountain Clouds Towards Sunrise Beautiful Morning Peaks Inspirational Motivational Nature Background UHD 4K
4k00:17High Speed Fire ball explosion towards to camera, cross frame ahead transition, slow motion fire flamethrower isolated on black background with alpha channel, perfect for cinema, digital composition.
High Speed Fire ball explosion towards to camera, cross frame ahead transition, slow motion fire flamethrower isolated on black background with alpha channel, perfect for cinema, digital composition.
4k00:16Close-up Shot of a Surgeon Putting on Augmented Reality Glasses to Perform State of the Art Surgery in High Tech Hospital. Doctors and Assistants Working in Operating Room. Shot on RED EPIC-W 8K.
严选
Close-up Shot of a Surgeon Putting on Augmented Reality Glasses to Perform State of the Art Surgery in High Tech Hospital. Doctors and Assistants Working in Operating Room. Shot on RED EPIC-W 8K.
hd00:11Top Down view of Fast Moving River with Rapids Surrounded by Pine Forest. Shot in Norway
Top Down view of Fast Moving River with Rapids Surrounded by Pine Forest. Shot in Norway
4k00:15Aerial view of white car driving on country road in forest. Cinematic drone shot flying over gravel road in pine tree forest
Aerial view of white car driving on country road in forest. Cinematic drone shot flying over gravel road in pine tree forest
4k00:12Multi-ethnic group of women dancing to the music of party with her other girl friends on the dance floor of a fashionable night club in Slow Motion.
Multi-ethnic group of women dancing to the music of party with her other girl friends on the dance floor of a fashionable night club in Slow Motion.
4k00:07Top view of creative business team working at modern office. Colleagues talking, smiling, high five with each other.
Top view of creative business team working at modern office. Colleagues talking, smiling, high five with each other.
4k00:24Colorful powder/particles fly after being exploded against black background. Shot with high speed camera, phantom flex 4K. Slow Motion.
Colorful powder/particles fly after being exploded against black background. Shot with high speed camera, phantom flex 4K. Slow Motion.
hd00:27Happy family- Father, mother and Two kids lying down on the sofa and using tablet pc at night. Family watching movie on tablet computer in a dark room. HD 1080p, slow motion 240 fps, high speed camera
Happy family- Father, mother and Two kids lying down on the sofa and using tablet pc at night. Family watching movie on tablet computer in a dark room. HD 1080p, slow motion 240 fps, high speed camera
4k00:23Above the ocean (Venice beach)
Above the ocean (Venice beach)
hd01:04Colorful powder. ping powder, green powder, blue powder,Powder exploding against black background. Shot with high speed camera, Slow Motion.
Colorful powder. ping powder, green powder, blue powder,Powder exploding against black background. Shot with high speed camera, Slow Motion.
hd00:37Blue skies sky, clean weather, time lapse blue nice sky. Clouds and sky timelapse, White Clouds & Blue Sky, Flight over clouds, loop-able, cloudscape, day, Full HD, 1920x1080, moving clouds. FULL HD.
Blue skies sky, clean weather, time lapse blue nice sky. Clouds and sky timelapse, White Clouds & Blue Sky, Flight over clouds, loop-able, cloudscape, day, Full HD, 1920x1080, moving clouds. FULL HD.
4k00:11Aerial cityscape flythrough video of London and the River Thames with a view of London Tower Bridge and the Shard
Aerial cityscape flythrough video of London and the River Thames with a view of London Tower Bridge and the Shard
4k00:37Aerial view of colorful sunset behind tall buildings and skyscrapers of downtown Los Angeles, California, with bright sunset lighting. Wide shot on 4k RED camera
严选
Aerial view of colorful sunset behind tall buildings and skyscrapers of downtown Los Angeles, California, with bright sunset lighting. Wide shot on 4k RED camera
hd00:19close-up of a chef working the wok with flames roasting mixed colorful vegetables tossing them , restaurant kitchen , slow motion
close-up of a chef working the wok with flames roasting mixed colorful vegetables tossing them , restaurant kitchen , slow motion
4k00:26Falling Dollar banknotes in 4K Loopable. High quality falling Dollar banknotes in 4K. Video is Loopable
Falling Dollar banknotes in 4K Loopable. High quality falling Dollar banknotes in 4K. Video is Loopable
4k00:17Aerial view of the Statue of Liberty at dusk. Manhattan and New Jersey skyline. New York City, United States. Shot from a helicopter.
Aerial view of the Statue of Liberty at dusk. Manhattan and New Jersey skyline. New York City, United States. Shot from a helicopter.
4k00:19Highly detailed epic sunrise world skyline. Planet earth Europe zone with night time city from space. 3D Rendering animation using satellite imagery (NASA)
Highly detailed epic sunrise world skyline. Planet earth Europe zone with night time city from space. 3D Rendering animation using satellite imagery (NASA)
4k00:15Colorful powder/particles fly after being exploded against white background. Shot with high speed camera, phantom flex 4K. Slow Motion.
Colorful powder/particles fly after being exploded against white background. Shot with high speed camera, phantom flex 4K. Slow Motion.
hd00:21Salad flying out of colander in super slow motion, shot on Phantom Flex 4K
Salad flying out of colander in super slow motion, shot on Phantom Flex 4K
hd00:26Side view of dust trail behind car isolated on black background, with alpha matte.
Side view of dust trail behind car isolated on black background, with alpha matte.
4k00:18Aerial panoramic shot of Paris cityscape and the Eiffel tower as seen from Montparnasse area on a cloudy day, France
Aerial panoramic shot of Paris cityscape and the Eiffel tower as seen from Montparnasse area on a cloudy day, France
4k00:11Close up portrait of beatiful curly hair african woman in the glasses smiling on the camera on the street background.
Close up portrait of beatiful curly hair african woman in the glasses smiling on the camera on the street background.
hd01:00PUFFY CLOUDS, Puffy fluffy white clouds blue sky time lapse motion background. Bright blue sky puffy fluffy white cloud cloudscape cloudy heaven. Puffy fluffy white cloud blue sky background. FHD.
PUFFY CLOUDS, Puffy fluffy white clouds blue sky time lapse motion background. Bright blue sky puffy fluffy white cloud cloudscape cloudy heaven. Puffy fluffy white cloud blue sky background. FHD.
4k00:15Frankfurt/Main Skyline Aerial Drone Shot
Frankfurt/Main Skyline Aerial Drone Shot
4k00:25A single droplet of oil falling into swirl of milky liquid. Shot with high speed camera, phantom flex 4K. Slow Motion.
A single droplet of oil falling into swirl of milky liquid. Shot with high speed camera, phantom flex 4K. Slow Motion.
hd00:20Seamless loop: Fantasy blue textured abstract shape and light particles in organic motion. Technology, science and engineering motion background. Depth of field settings. 3d rendering.
Seamless loop: Fantasy blue textured abstract shape and light particles in organic motion. Technology, science and engineering motion background. Depth of field settings. 3d rendering.
hd00:22Cute French Bulldog dog wearing funny sombrero party hat
Cute French Bulldog dog wearing funny sombrero party hat
hd00:11Cheerful People Jumping at Sunset
Cheerful People Jumping at Sunset
hd00:31Sirloin aged prime rare roast isolated grilling pork filet with stripes slow motion. Close up blurred concept of chief cooked oil unhealthy, but very satisfying protein tasty burger in casual bar
Sirloin aged prime rare roast isolated grilling pork filet with stripes slow motion. Close up blurred concept of chief cooked oil unhealthy, but very satisfying protein tasty burger in casual bar
4k00:14Young couple holding hands woman leading boyfriend walking towards view of Eiffel Tower Paris travel concept
严选
Young couple holding hands woman leading boyfriend walking towards view of Eiffel Tower Paris travel concept
hd00:18Mountain Climber Man Reaching The Top Doing His Best. Closeup on Hand. HD, 1920x1080.
Mountain Climber Man Reaching The Top Doing His Best. Closeup on Hand. HD, 1920x1080.
4k00:22Aerial view waves break on white sand beach. Sea waves on the beautiful beach aerial view drone 4k shot.
Aerial view waves break on white sand beach. Sea waves on the beautiful beach aerial view drone 4k shot.
4k00:08Riyadh, Oalya / Saudi Arabia – 19 10 2017:Saudi Arabia Riyadh landscape TimeLapse - Time-Lapse - Riyadh Tower Kingdom Centre - Kingdom Tower – Riyadh Skyline - Al-Mamlaka – AlMamlakah – Riyad at Night
Riyadh, Oalya / Saudi Arabia – 19 10 2017:Saudi Arabia Riyadh landscape TimeLapse - Time-Lapse - Riyadh Tower Kingdom Centre - Kingdom Tower – Riyadh Skyline - Al-Mamlaka – AlMamlakah – Riyad at Night
4k00:12Aerial view of a Dystopian New York city in the future with projection mapping on buildings with cyberpunk, neon colors. Wide shot. Shot on 4k RED camera.
严选
Aerial view of a Dystopian New York city in the future with projection mapping on buildings with cyberpunk, neon colors. Wide shot. Shot on 4k RED camera.
hd00:45Slow motion close-up of a person slicing a pepperoni pizza into multiple slices with a pizza cutter
Slow motion close-up of a person slicing a pepperoni pizza into multiple slices with a pizza cutter
4k00:12Aerial view waves break on white sand beach at sunset. Sea waves on the beautiful beach aerial view drone 4k shot.
Aerial view waves break on white sand beach at sunset. Sea waves on the beautiful beach aerial view drone 4k shot.
4k00:23Aerial helicopter shot flying around downtown Los Angeles at sunset. Wide shot filmed with a RED camera.
严选
Aerial helicopter shot flying around downtown Los Angeles at sunset. Wide shot filmed with a RED camera.
4k00:18POV view of city skyline buildings. modern business district background. financial economy growth concept
POV view of city skyline buildings. modern business district background. financial economy growth concept
4k00:09Connected San Francisco Highway with traffic passing by. Sunset. Aerial view. California, United States. Futuristic network. Technology. Transportation.
Connected San Francisco Highway with traffic passing by. Sunset. Aerial view. California, United States. Futuristic network. Technology. Transportation.
4k00:20Technology Interface - Computer Data Screen Display Animation
Technology Interface - Computer Data Screen Display Animation
4k00:09Male and Female Architects Wearing Augmented Reality Headsets Work with 3D City Model. High Tech Office Professional People Use Virtual Reality Modeling Software Application.
严选
Male and Female Architects Wearing Augmented Reality Headsets Work with 3D City Model. High Tech Office Professional People Use Virtual Reality Modeling Software Application.
4k00:23Japan Tokyo Aerial v33 Flying low backwards away from Tokyo tower with cityscape views
Japan Tokyo Aerial v33 Flying low backwards away from Tokyo tower with cityscape views
hd00:14Cut sheet metal at workshop. Modern tool in heavy industry. Dangerous job. High precision manufacture of steel parts. Automation of process indoors. Automatic work for ironwork. Close up computer cnc
Cut sheet metal at workshop. Modern tool in heavy industry. Dangerous job. High precision manufacture of steel parts. Automation of process indoors. Automatic work for ironwork. Close up computer cnc
hd00:17Man on mountain top looks down determined to conquer the world close up slow motion. Male head silhouette back side view at evening sky background enjoying view of success. Self-made person concept
Man on mountain top looks down determined to conquer the world close up slow motion. Male head silhouette back side view at evening sky background enjoying view of success. Self-made person concept
4k00:57Fire Smoke from Bottom Up Black Background Use the composite mode Screen for transparency.
Fire Smoke from Bottom Up Black Background Use the composite mode Screen for transparency.
4k00:10Professional Female Architect Wearing Makes Gestures with Augmented Reality Headset, Shows Statistics for 3D City Model. High Tech Office Use Virtual Reality Modeling Software Application.
严选
Professional Female Architect Wearing Makes Gestures with Augmented Reality Headset, Shows Statistics for 3D City Model. High Tech Office Use Virtual Reality Modeling Software Application.
4k00:27Multi colored powder flying in slow motion as camera pulls away and rotates, shot with high speed motion control.
严选
Multi colored powder flying in slow motion as camera pulls away and rotates, shot with high speed motion control.
4k00:13young happy Asian family goes on a green field with two children, slow motion
young happy Asian family goes on a green field with two children, slow motion
4k00:18Aerial view electric car driving on country road, luxury car driving through mist at dusk with headlights
Aerial view electric car driving on country road, luxury car driving through mist at dusk with headlights
4k00:32Red powder exploding on white background in super slow motion, shot with Phantom Flex 4K
Red powder exploding on white background in super slow motion, shot with Phantom Flex 4K
hd00:13Electronic circuit board production. Automated Circut Board machine Produces Printed digital electronic board. Electronics contract manufacturing. Manufacture of electronic chips. High-tech
Electronic circuit board production. Automated Circut Board machine Produces Printed digital electronic board. Electronics contract manufacturing. Manufacture of electronic chips. High-tech
4k00:13Elevated Road Junction And Interchange Overpass At Night Traffic Timelapse Transportation Light Dark Illuminated Modern Urban Office Building
Elevated Road Junction And Interchange Overpass At Night Traffic Timelapse Transportation Light Dark Illuminated Modern Urban Office Building
4k00:16Aerial drone shot over the north european forest. Shot in 4K (UHD).
Aerial drone shot over the north european forest. Shot in 4K (UHD).
4k00:17milan city skyline aerial view flying towards financial area skyscrapers
milan city skyline aerial view flying towards financial area skyscrapers
4k00:36Colorful powder/particles fly after being exploded against white background. Shot with high speed camera, phantom flex 4K. Slow Motion. Included 2 different color versions.
Colorful powder/particles fly after being exploded against white background. Shot with high speed camera, phantom flex 4K. Slow Motion. Included 2 different color versions.
4k00:21Aerial view of Tokyo skyline with morning light, Japan. Cityscape with downtown buildings. Light effect applied.
Aerial view of Tokyo skyline with morning light, Japan. Cityscape with downtown buildings. Light effect applied.
4k00:21 Berlin, Germany. Aerial shot of the TV Tower
Berlin, Germany. Aerial shot of the TV Tower
4k00:254K,Time lapse view sunset at Tokyo city with Tokyo Tower in japan asia Is a famous place
4K,Time lapse view sunset at Tokyo city with Tokyo Tower in japan asia Is a famous place
4k00:39Parmesan cheese being grated onto tomato ravioli dish in bowl in ultra slow motion with 4k Phantom Flex camera
严选
Parmesan cheese being grated onto tomato ravioli dish in bowl in ultra slow motion with 4k Phantom Flex camera
4k00:10Aerial view of San Francisco skyline with connections. Technology-Futuristic. Communication. California, United States. California, USA. Shot from helicopter.
Aerial view of San Francisco skyline with connections. Technology-Futuristic. Communication. California, United States. California, USA. Shot from helicopter.
4k00:30Clouds Realistic Dry Ice Smoke Storm Atmosphere Fog Overlay (footage Background) for different projects. (slow motion) You can work with the masks in After Effects and get beautiful results!!!
Clouds Realistic Dry Ice Smoke Storm Atmosphere Fog Overlay (footage Background) for different projects. (slow motion) You can work with the masks in After Effects and get beautiful results!!!
4k00:08Woman helping another woman up the path.
Woman helping another woman up the path.
4k00:12Airplane flight. Wing of an airplane flying above the clouds with sunset sky. View from the window of the plane. Airplane, Aircraft. Traveling by air. 4K UHD video
Airplane flight. Wing of an airplane flying above the clouds with sunset sky. View from the window of the plane. Airplane, Aircraft. Traveling by air. 4K UHD video
4k00:594K. Amazing Sunrise Over The Earth. View Of Planet Earth From Space. Ultra High Definition. 3840x2160. Realistic 3d Animation. (You Can Speed Up This Animation For Your Projects).
4K. Amazing Sunrise Over The Earth. View Of Planet Earth From Space. Ultra High Definition. 3840x2160. Realistic 3d Animation. (You Can Speed Up This Animation For Your Projects).
4k00:08Aerial view of modern buildings in smart city with motion graphic,Drone footage
Aerial view of modern buildings in smart city with motion graphic,Drone footage
4k00:14Bionic arm is making some movements. Artificial arm mechanism is being tested. 4K.
Bionic arm is making some movements. Artificial arm mechanism is being tested. 4K.
4k00:23Berlin, Germany. Aerial shot of TV Tower on Alexanderplatz
Berlin, Germany. Aerial shot of TV Tower on Alexanderplatz
4k00:13A high angle aerial view of colorful classic cars traveling on the streets of Havana, Cuba.
A high angle aerial view of colorful classic cars traveling on the streets of Havana, Cuba.
4k00:23Aerial view car driving on country road at dusk through forest with headlights
Aerial view car driving on country road at dusk through forest with headlights
下一页
共 15,917 页