Smoke coming out of factory chimney.
Palabras clave
chimney,
pollution,
factory,
industry,
smoke,
environment,
smog,
air,
energy,
industrial,
toxic,
gas,
steam,
ecology,
atmosphere,
environmental,
climate,
pipe,
chemical,
sky,
power,
global,
dirty,
station,
technology,
warming,
tower,
coal,
fuel,
plant,
fume,
dioxide,
emission,
cloud,
exhaust,
smokestack,
manufacturing,
contamination,
danger,
fog,
city,
global warming,
background,
production,
fume
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