英文關鍵字
air
atmosphere
billowing
blue
carbon
change
chemical
chimney
climate
cloud
company
conservation
contaminate
contamination
damage
dioxide
dirty
emission
emissions
energy
environment
environmental
exhaust
factor
factory
from
fumes
global
greenhouse
industrial
industry
manufacturing
motion
pipe
plant
pollute
pollution
power
refinery
regulation
reverse
sky
smog
smoke
smokestack
stack
steam
tall
technology
toxic
vapor
video
warming