英文關鍵字
air
business
carbon
chemical
chimney
climate
clouds
co2
countryside
dioxide
dirty
ecology
electricity
emission
energy
environment
environmental
exhaust
factory
fuel
fumes
gas
generation
global
greenhouse
industrial
industry
landscape
manufacturing
nature
nuclear
ozone
plant
pollution
power
refinery
rural
sky
smog
smoke
smokestack
stack
station
steam
toxic
vapor
warming
waste