英文關鍵字
aerial
atmosphere
change
chemical
chimney
climate
co2
coal
damage
dirty
ecology
emission
energy
environmental
exhaust
factory
fog
fossil
fuel
fumes
furnace
garbage
gas
global
health
industrial
industry
pipes
pollute
polluters
pollution
power
smog
smoke
smokestack
station
steam
toxic
vapor
warming
white