Yellow-red pipe on a background of blue sky on a sunny day.
Palabras clave
pollution,
smoke,
white,
sky,
blue,
technology,
red,
air,
pipe,
chimney,
industrial,
factory,
plant,
industry,
ecology,
climate,
warming,
refinery,
smog,
environment,
power,
energy,
cloud,
clear,
heat,
station,
chemical,
gas,
toxic,
coal,
heating,
nature,
sunset,
pipe,
smoking,
boiler room,
new
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