英文關鍵字
environment
garbage
pollution
trash
waste
dirty
nature
plastic
rubbish
environmental
dump
ecology
water
bottle
problem
river
dirt
junk
pollute
recycle
recycling
toxic
unhygienic
litter
polluted
danger
green
sewage
contamination
disposal
industrial
chemical
background
city
industry
coast
refuse
disaster
floating
health
impure
sea
bird
bag
ecological
contaminated
ugly
filthy
damage