英文關鍵字
air
allergy
atmosphere
awareness
breath
breathing
carbon
chemical
contamination
danger
debris
dioxide
disease
dump
earth
ecological
ecology
ecosystem
environment
environmental
female
filter
forest
global
harmful
hazard
hazardous
health
impact
industrial
influence
landfill
mask
nature
planet
plants
plastic
poison
poisonous
pollute
pollution
problems
respirator
respiratory
risk
stink
trees
unhealthy
wearing
woman