4K 莫斯科，俄罗斯- 2019年3月21日：指南儿童听的故事在学校游览期间的在太空博物馆 妇女专家 股票视频 莫斯科，俄罗斯- 2019年3月21日：指南儿童听的故事在学校游览期间的在太空博物馆 妇女专家 股票视频
HD 莫斯科，俄罗斯- 2019年3月21日：指南儿童听的故事在学校游览期间的在太空博物馆 妇女专家 影视素材 莫斯科，俄罗斯- 2019年3月21日：指南儿童听的故事在学校游览期间的在太空博物馆 妇女专家 影视素材
4K African american boy reacting to confusing prompt gesturing at laptop listening typing at home children technology casual modern 股票视频 African american boy reacting to confusing prompt gesturing at laptop listening typing at home children technology casual modern 股票视频
4K African american teacher guiding children in classroom after seeing tablet issue front boy working african american teacher 股票视频 African american teacher guiding children in classroom after seeing tablet issue front boy working african american teacher 股票视频
4K Diverse preteen children standing linked leaning and smiling in classroom for presentation screen group students teamwork unity 股票录像 Diverse preteen children standing linked leaning and smiling in classroom for presentation screen group students teamwork unity 股票录像
4K Diverse children linking arms talking after display cue in class girl pink dress presenting students teamwork collaboration 股票视频 Diverse children linking arms talking after display cue in class girl pink dress presenting students teamwork collaboration 股票视频
4K Teacher with group of children at table gesturing to clear bins children raising hands answering teacher with group of children at 股票录像 Teacher with group of children at table gesturing to clear bins children raising hands answering teacher with group of children at 股票录像
4K African american teacher greeting and guiding children observing plants with tablet lens in class educator pupils seedlings 影视素材 African american teacher greeting and guiding children observing plants with tablet lens in class educator pupils seedlings 影视素材
4K Female teacher with tablet leading children with backpacks hearing child gesturing guiding to class female teacher with tablet 影视素材 Female teacher with tablet leading children with backpacks hearing child gesturing guiding to class female teacher with tablet 影视素材
4K African american teacher in rust top pointing at white laptop teaching children at classroom table african american teacher in 股票视频 African american teacher in rust top pointing at white laptop teaching children at classroom table african american teacher in 股票视频
4K Diverse children team sitting on soccer field with balls center boy starting chat about practice outdoor grass kids youth athletic 影视素材 Diverse children team sitting on soccer field with balls center boy starting chat about practice outdoor grass kids youth athletic 影视素材
4K Diverse children sitting on soccer field in blue shirts left rolling ball center coaching team youths outdoors grass teamwork 股票录像 Diverse children sitting on soccer field in blue shirts left rolling ball center coaching team youths outdoors grass teamwork 股票录像
4K Diverse children in blue shirts on grass right boy lifting soccer ball causing girl reaching youth teamwork friendship outdoor 股票录像 Diverse children in blue shirts on grass right boy lifting soccer ball causing girl reaching youth teamwork friendship outdoor 股票录像
4K Diverse children gathering around laptop at school girl leading typing and pointing at screen students classroom computer teamwork 股票视频 Diverse children gathering around laptop at school girl leading typing and pointing at screen students classroom computer teamwork 股票视频
4K Diverse children sitting on bench with backpacks boy coming and leaning middle girl sharing story diverse children sitting on 股票视频 Diverse children sitting on bench with backpacks boy coming and leaning middle girl sharing story diverse children sitting on 股票视频
4K Three children sitting on brick bench in courtyard right girl starting telling joke yellow pack three children sitting on brick 股票视频 Three children sitting on brick bench in courtyard right girl starting telling joke yellow pack three children sitting on brick 股票视频
4K Two female children backpack girl approaching and checking on wheelchair friend in school corridor peers friendship support 股票录像 Two female children backpack girl approaching and checking on wheelchair friend in school corridor peers friendship support 股票录像
4K Diverse female children sitting in class after teacher cue by cubby while right child raising hand classroom students 股票视频 Diverse female children sitting in class after teacher cue by cubby while right child raising hand classroom students 股票视频
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