英文關鍵字
air
atmosphere
atmospheric
blue
building
carbon
chemical
chimney
climate
cloud
coal
combustion
construction
contamination
damage
dioxide
dirty
ecology
energy
environment
environmental
exhaust
factory
footage
fuel
fumes
gas
generation
global
going
industrial
industry
manufacturing
motion
nobody
pipe
plant
pollution
power
refinery
sky
slow
smog
smoke
smokestack
stack
station
steam
technology
tower
toxic
vapor
warming
waste
white