teacher biology eyeglasses holds book and microscope man with beard surprised face classroom |
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| navigate by keyword : adult background barber beard bearded biology blackboard book bulb casual caucasian chalkboard classroom college concept development education equipment experiment expression eyeglasses face guy hipster hold intelligence knowledge laboratory lesson lifestyle light man microscope mustache person research school science scientist smart stand study surprised teach teacher university unshaven |
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| Teacher of biology in eyeglasses holds book and microscope. Man with beard on surprised face in classroom. Biology concept. Scientist holds book and microscope, chalkboard on background, copy space. |
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