英文關鍵字
air
bad
blue
catastrophe
catastrophy
chemical
chimney
city
climate
danger
dangerous
dirty
disaster
ecological
ecology
environment
environmental
equipment
factory
fear
female
gas
industrial
industry
landscape
man
mask
men
nature
people
person
pipe
plant
poisonous
pollution
portrait
protection
protective
respirator
sky
smog
smoke
steam
survivor
technology
teenager
toxic
urban
young