Teacher and students in conference room vector illustration. Teacher and students sitting in front of whiteboard, listening to lecture. Education concept.

Professor lecturer. Doctor training group speech for students audience vector cartoon background. Professor lecturer, leadership on conference, briefing or seminar illustration

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圖片庫的Professor lecturer. Doctor training group speech for students audience vector cartoon background. Professor lecturer, leadership on conference, briefing or seminar illustration 圖片 Image 138171910.

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Professor Lecturer. Doctor Training Group Speech For Students Audience Vector Cartoon Background. Professor Lecturer, Leadership On Conference, Briefing Or Seminar Illustration 免版稅剪貼畫，向量插圖和庫存圖片. Image 138171910.

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Professor lecturer. Doctor training group speech for students audience vector cartoon background. Professor lecturer, leadership on conference, briefing or seminar illustration

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