英文關鍵字
asia
bad
bottle
cardboard
chemical
city
clam
coast
contamination
cracked
damage
dead
destruction
dirty
disaster
disordered
domestic
dump
dumping
dust
earth
ecology
environment
environmental
garbage
ground
household
industrial
junk
land
landfill
leaves
litter
little
muddy
poisoned
poisonous
pollution
protect
refuse
river
rubbish
shells
sloppy
stink
stream
trash
unhealthy
unpleasant
waste
water