Portrait of senior teacher in eyeglasses holding digital tablet in classroom.

Portrait of male University Teacher indoors. Knowledge day. Teacher and tutoring education concept. Professor in class on blackboard background. Bearded professor at school lesson in classroom.

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图像库的Portrait of male University Teacher indoors. Knowledge day. Teacher and tutoring education concept. Professor in class on blackboard background. Bearded professor at school lesson in classroom. 图像 Image 156718492.

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Portrait Of Male University Teacher Indoors. Knowledge Day. Teacher And Tutoring Education Concept. Professor In Class On Blackboard Background. Bearded Professor At School Lesson In Classroom. 正版图像 123RF中国 - 高质量免版税图像库. Image 156718492.

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Portrait of male University Teacher indoors. Knowledge day. Teacher and tutoring education concept. Professor in class on blackboard background. Bearded professor at school lesson in classroom.

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