英文關鍵字
line
icon
animation
greenhouse
gas
emission
contamination
pollution
air
atmosphere
combustion
carbon
footprint
ecological
cloud
global
warming
climate
change
issue
crisis
linear
motion
graphic
pictogram
hd
video
thin
logo
outline
loop
art
contour
drawing
animated
illustration
concept
web
symbol
flat
lineart
isolated
design
sign
item
dynamic
simple
dark