英文關鍵字
aerial
air
atmosphere
background
chemical
chimney
climate
coal
construction
dirty
disaster
ecology
electric
electricity
emissions
energy
environment
environmental
evening
factory
fuel
fumes
gas
global
harmful
heat
industrial
industry
landscape
massive
nature
oil
pipe
pipes
plant
pollute
pollution
power
production
sky
smog
smoke
stack
station
steam
technology
tower
toxic
view
warming