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英文關鍵字
airpollution
polluted
air
bluebackground
brightcolor
brightcolour
building
exterior
carbondioxide
co2
chimney
cloud
colorimage
colourimage
image
concept
conceptual
copyspace
whitespace
negativespace
day
emitting
environment
environmental
issue
factory
fumes
emissions
greenhousegas
illustration
drawing
infographic
graphic
nobody
nopeople
number
figure
pollution
smoke
smokestack
text
vertical
westernscript
letter
writing