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 Elementary school girl focusing at desk in classroom adjusting posture and then smiling briefly elementary school girl focusing at 股票视频 Elementary school girl focusing at desk in classroom adjusting posture and then smiling briefly elementary school girl focusing at 股票视频
4K 一个高中女孩在长椅上哭泣，她的关心朋友在一旁安慰她。她的同学们在一个艰难的情感时刻提供支持 影视素材 一个高中女孩在长椅上哭泣，她的关心朋友在一旁安慰她。她的同学们在一个艰难的情感时刻提供支持 影视素材
4K In school girl using laptop while classmates talking in classroom education technology learning studying digital in school girl 影视素材 In school girl using laptop while classmates talking in classroom education technology learning studying digital in school girl 影视素材
