4K Portrait caucasian sad little girl student looking at camera fail exam in school teen pupil learner schoolgirl upset lonely child 股票视频 Portrait caucasian sad little girl student looking at camera fail exam in school teen pupil learner schoolgirl upset lonely child 股票视频
4K 一位自信冷静的白人男性，近距离肖像，一位年轻人/学生正看着窗外，思考着一个想法，放松并沉思 影视素材 一位自信冷静的白人男性，近距离肖像，一位年轻人/学生正看着窗外，思考着一个想法，放松并沉思 影视素材
4K Overload african american girl student looking in laptop holding head migraine headache studying fail learning failure overload 股票录像 Overload african american girl student looking in laptop holding head migraine headache studying fail learning failure overload 股票录像
4K Caucasian frustrated female girl school student looking at mobile phone bad news sad upset stress woman schoolgirl pupil 股票视频 Caucasian frustrated female girl school student looking at mobile phone bad news sad upset stress woman schoolgirl pupil 股票视频
4K Caucasian teacher and diverse student looking at camera classroom pedagogy smart group of happy children smiling while instructor 影视素材 Caucasian teacher and diverse student looking at camera classroom pedagogy smart group of happy children smiling while instructor 影视素材
4K Caucasian teacher and diverse student looking at camera classroom pedagogy smart group of happy children smiling while instructor 股票录像 Caucasian teacher and diverse student looking at camera classroom pedagogy smart group of happy children smiling while instructor 股票录像
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