University professor in a jacket.
Palabras clave
prof,
university,
teacher,
smile,
lecturer,
man,
senior,
mathematician,
scientist,
physicist,
chemist,
college,
institute,
higher education,
audience,
blackboard,
lesson,
class,
training,
course,
intelligence,
wisdom,
elderly,
person,
mature,
suit,
smiling,
older,
manager,
book,
library,
class
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