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lecturer holding microphone near blurred audience during seminar, banner
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微笑的男教练在演讲厅为观众做演讲
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年轻的老师在黑板上写英语语法。学习英语。
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lecturer explaining
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在商务会议上，坐在后排的人和靠近办公桌的老师
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老师和行动，在黑板上向学生展示新课程，看起来很严格，教育理念
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Lecturer at university.
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讲师进行讲座，培训。
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老师和行动，在黑板上向学生展示新课程，看起来很严格，教育理念
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教室里白板附近年轻老师的画像。文本空间
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