燃やす
environmental
black and white
building
chemical
chimney
coal
dusk
ecology
electric
electrical
electricity
emission
energy
environment
exhaust
factory
fuel
fume
gas
generate
generator
heavy industry
industrial
industry
infrastructure
manufacturing
monochrome
oil
oil tank
petrochemical
plant
pollute
polluting
pollution
power
power station
powerplant
production
structure
sunset
technology