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man lecturing students in a university lecture theatre
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dreamstime
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40s
adult
african
aged
american
black
college
communication
concentrating
copy
desk
diversity
education
ethnicity
focus
gesturing
group
higher
horizontal
incidental
indoors
large
learning
lecture
lecturer
lecturing
light
low
man
meeting
middle
multiethnic
of
one
people
person
presentation
presenting
room
selective
space
standing
students
studying
teacher
technology
theatre
university
working