英文關鍵字
awning
beach
bedframe
branch
coast
contamination
damage
danger
dead
dirt
dirty
dry
dump
ecology
environment
environmental
garbage
global
green
heap
leafless
litter
messy
nature
ocean
old
pebble
pile
plastic
pollute
polluted
pollution
problem
rags
recycle
risk
rubbish
scrap
sea
ship
shore
smell
stone
trash
tree
ugliness
unhygienic
waste
water
wave