4K 一位漂亮年轻、困惑的女性的肖像，她正看着镜头，指着自己，说：“我是谁？不用谢，我不需要。” 影视素材 一位漂亮年轻、困惑的女性的肖像，她正看着镜头，指着自己，说：“我是谁？不用谢，我不需要。” 影视素材
4K African american teacher in red spotting error guiding teen student typing on white laptop in class african american teacher in 股票录像 African american teacher in red spotting error guiding teen student typing on white laptop in class african american teacher in 股票录像
4K Focused girl medical student in white coat sitting conference room and writing notes with folder at seminar young 影视素材 Focused girl medical student in white coat sitting conference room and writing notes with folder at seminar young 影视素材
4K Diligent woman student with group of other interns listening lecture at lesson in big university doctor teacher in white coat in 股票视频 Diligent woman student with group of other interns listening lecture at lesson in big university doctor teacher in white coat in 股票视频
4K Happy cheerful student wearing backpack looking at camera smiling young woman standing isolated over white background girl college 股票视频 Happy cheerful student wearing backpack looking at camera smiling young woman standing isolated over white background girl college 股票视频
4K Student walking toward peer initiating blue white atoms orbiting for science greeting peer walking student walking toward peer 股票录像 Student walking toward peer initiating blue white atoms orbiting for science greeting peer walking student walking toward peer 股票录像
