英文關鍵字
chemical
chemicals
clean
climate
damage
dangerous
dirty
earth
ecosystem
energy
environment
environmental
environmentalism
environmentalist
environmentalists
factory
gas
gases
gasses
gassy
industrial
ntoxic
pipe
pipes
plant
poisonous
polluted
polluting
pollution
processing
river
spill
threatening
threatens
toxic
toxin
toxins
waste
wasten
water