英文關鍵字
air
alarm
change
chemical
chimney
climate
clouds
coal
construction
contamination
danger
dirty
disaster
earth
ecology
electricity
emission
energy
environmental
exhau
factory
flames
fog
gas
health
heat
heavy
industrial
industry
metallurgy
mine
natural
ozone
plant
poison
pollutant
pollution
power
quality
radiation
sky
smog
smoke
steam
thermal
threat
toxic
venomous
waste