air
air pollution
atmosphere
blue
building
carbon
chemical
chimney
climate
cloud
coal
contamination
damage
dioxide
dirty
ecology
emission
emissions
energy
environment
environmental
exhaust
factory
fuel
fumes
gas
global
global warming
industrial
industry
manufacturing
nature
pipe
plant
pollution
power
production
refinery
sky
smog
smoke
smokestack
station
steam
technology
tower
toxic
vapor
warming
white
定額
Smoke from a factory chimney. Ecological pollution. Air emissions polluting forest. Industrial waste. Industry metallurgical plant emissions. Smog and bad ecology. Central heating of CHP in winter.の素材 [FY310222685999]
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