英文關鍵字
atmosphere
authentic
business
carbon
chimney
climate
cloud
cloudy
coal
combustion
contamination
development
dirty
discharge
ecology
electric
electricity
emission
energy
environment
environmental
exhaust
factory
fog
fuel
gas
generate
growth
industrial
industry
lignite
manufacturing
nature
pollute
pollution
power
powerful
sky
smog
smoke
smokestack
stacks
steam
stink
technology
timelapse
town
toxic
urban