adult
background
blackboard
book
caucasian
chalkboard
check
classroom
close up
college
concentrated
concept
education
end
exact
explanation
eyeglasses
finish
formal
formula
full
glance
glasses
handsome
knowledge
lesson
let
look
man
math
mathematics
me
mistake
pile
professor
school
science
see
smart
study
suit
symbol
teach
teacher
university
unshaven
vision
wear
wonder
written
定額
Let me see. Teacher formal wear and glasses looks concentrated, chalkboard background. Chalkboard full of math formulas. Man in end of lesson checking mistakes. Teacher finished explanationの素材 [FY310103637388]
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