abbreviation
blackboard
board
calculate
calculations
chalk
chalkboard
college
complex
complicated
concept
confusion
data
drawing
education
equation
formula
hand
icon
idea
imf
intelligence
internet
knowledge
lecture
mind
new
physics
problem
problem solving
professor
research
science
scientist
security
smart
solution
studying
technology
theory
university
write
定額
Hand drawing abbreviation conceptの素材 [FY310174149963]
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