燃やす
air
atmosphere
building
burning
chemical
chimney
climate
climate change
cloud
co2
coal
contamination
danger
dioxide
dirty
electricity
emission
energy
environment
environmental
europe
factory
fog
fuel
fumes
gas
global warming
heating
industrial
industry
petroleum
pipe
pollution
power
power station
production
refinery
sky
smog
smoke
station
steam
thermal
thermalpolution
toxic
trumpet
urban
warming
waste