英文關鍵字
acid
air
architecture
atmosphere
background
business
chemical
chemistry
chimney
climate
cloud
co2
danger
dirty
disaster
ecology
effect
emissions
energy
engineering
environment
environmental
equipment
factory
fuel
gas
greenhouse
health
heavy
industrial
industry
manufacturing
metallurgy
petrochemical
petroleum
pipe
plant
pollution
power
rain
refinery
signature
sky
smog
smoke
solar
space
standard
stoker
toxic
warming