英文關鍵字
air
atmosphere
chemical
chimney
climate
cloud
cloudy
co2
coal
crane
crepuscular
dioxide
dirty
dust
ecology
electricity
emissions
energy
environment
environmental
exhaust
factory
fossil
fumes
gas
global
heavy
industrial
industry
manufacturing
metallurgy
oil
pipe
plant
pollution
power
puff
sky
smog
smoke
smokestack
stack
station
steam
technology
timelapse
tower
toxic
warming
white