英文關鍵字
chimney
steam
stack
smoke
sky
emit
energy
electricity
skyline
atmosphere
blue
chp
climate
cloud
crisis
day
dirty
ecology
environment
factory
fume
generation
heat
heating
industrial
industry
plant
power
shine
smog
smokestack
station
sunlight
swing
urban
waste
white
wind
burn
fuel
air
pollution
emission