abstract
air
atmosphere
blue
chimney
climate
cloud
clouds
cloudscape
cloudy
coal
cumulus
dark
day
ecology
energy
environment
environmental
factory
fluffy
fuel
gas
global
global warming
heaven
industrial
industry
light
nature
pipe
pipes
plant
pollution
power
power station
sky
smog
smoke
smokestack
stack
station
steam
summer
tower
toxic
warming
weather
white
you smoke
定額
Smoke and pollution. Smoke coming out of chimneys and power plants. Chemical industries releasing toxic smokes into the air and causing serious pollution of the earth.の素材 [FY310230512536]
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