background
billboard
blackboard
board
business
cartoon
chalk
character
class
classroom
college
design
education
explain
flat
front
hand
illustration
isolated
job
knowledge
learning
lecture
lesson
male
man
math
people
person
pointing
presentation
process
profession
professional
professor
school
science
set
speaker
standing
student
study
teach
teacher
teaching
training
university
work
young
定額
Male teacher standing at blackboard to explain science presentation vector illustration. Cartoon professor teaching on school lesson or lecture in university or college, student learning processの素材 [FY310198528659]
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