燃やす
abstract
air
art
atmosphere
background
black
blue
building
buoyancy
chemical
chimney
danger
dark
destroy
dirty
drifting
ecology
energy
environment
environmental
evaporate
factory
fire
float
fog
fumes
gas
global
incense
industrial
industry
pipe
plant
poison
pollution
power
shiny
sky
smog
smoke
smokestack
station
steam
technology
tower
toxic
warming
write