英文關鍵字
medium
group
of
people
child
girl
female
caucasian
baby
mixedrace
boy
male
asian
animation
digital
clock
diverse
student
pouring
liquid
test
tube
using
microscope
composite
multiple
exposure
childhood
togetherness
education
concept
kid
school
little
study
learning
studying
university
college
microbiology
scientist
laboratory
experiment
lab
knowledge
happiness
cheerful
learn
together
research