environmental
air
background
building
chemical
chimney
clipart
concept
danger
dirty
dust
earth
ecology
electricity
element
emissions
energy
environment
factory
flat
fumes
garbage
green
icon
illustration
industrial
industry
land
landscape
manufacture
modern
pipe
plant
pollute
polluted
pollution
production
protect
protection
river
scene
scenery
smog
smoke
technology
toxic
tree
view
water
定額
Plant with pipes from which smoke comes out. Trash emission to river water. Landscape with ecological disaster. Nature ecology elements and ecology problem concept in flat styleの素材 [FY310166112075]
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