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teacher explaining machine
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JPG 300 DPI
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Author:
dreamstime
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buy for Personal Use & Commercial
File Type:
JPG
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middleaged
handsome
mlae
man
teach
teaching
teacher
explainging
demonstration
student
students
boys
teen
teenagers
class
college
vocational
craft
trade
machine
machinery
operate
complex
attentive
dials
vapor
electrical
gauge
work
job
profession