英文關鍵字
air
business
change
chemical
chimney
climate
cultivated
dirty
ecological
ecology
effect
emission
emit
environment
environmental
factory
farmland
field
fume
gas
global
grassland
green
hazard
hazardous
impact
industrial
industry
issue
manufacture
manufacturing
middle
modern
pipe
pipeline
pollute
polluted
polluting
pollution
power
production
silent
smog
smoke
steam
supply
technology
tower
toxic
tube
twilight
warming