燃やす
air
atmosphere
backlight
black
burner
business
chemical
chimney
cloud
combustible
damage
dark
ecology
economy
emission
energy
environment
environmental
factory
fuel
gas
global
heavy
industrial
industry
metal
oil
petrochemical
petrol
petroleum
pipe
pipeline
plant
pollution
power
production
refinery
shadow
smog
smoke
station
steam
structure
sunset
technology
tower
vapor
warming
waste