英文關鍵字
air
atmosphere
breath
breathe
cancer
carbon
climate
close
closeup
contaminated
contamination
dangerous
dioxide
dirty
earth
ecological
ecology
emission
environment
environmental
female
filter
forest
fresh
gas
generation
girl
hazard
health
healthcare
lungs
mask
nature
planet
poison
poisonous
pollution
prevention
protect
protection
respirator
risk
safety
save
toxic
turning
up
wearing
woman