air
atmosphere
background
building
business
chemical
chemistry
chimney
climate
cloud
coal
contamination
damage
dioxide
dirty
ecology
emission
energy
environment
environmental
exhaust
factory
fuel
fume
gas
global
health
high
industrial
industry
manufacture
manufacturing
nature
pipe
plant
pollution
power
production
sky
smog
smoke
smokestack
stack
steam
technology
tower
toxic
warming
waste
white
定額
Poor environment in the city. Environmental disaster. Harmful emissions into the environment. Smoke and smog. Pollution of the atmosphere by plants. Exhaust gases.の素材 [FY31069913698]
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