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