英文關鍵字
medium
group
of
people
child
boy
male
mixedrace
girl
female
caucasian
black
animation
education
school
icon
diverse
classroom
global
learning
elementary
concept
digitally
generated
video
study
student
symbol
knowledge
sign
college
university
class
studying
illustration
digital
design
graphic
lesson
learn
business
vector
technology
web
montage