英文關鍵字
cartoon
flat
animation
illustration
chemistry
school
education
science
class
student
classroom
study
experiment
laboratory
research
college
lesson
equipment
biology
lab
learning
microscope
test
university
desk
2d
motion
graphic
scene
design
hd
video
background
animated
footage
style
view
loop
scenery
backdrop
banner
infographic
area
toon
art
space
dynamic
character
people