英文關鍵字
bamboo
beach
bottle
box
cleaning
cleanup
coast
coastline
dirt
dirty
disaster
dump
ecology
environment
environmental
floated
foam
garbage
glass
industrial
landfill
landscape
litter
marine
messy
nature
ocean
outdoors
paper
plastic
pollute
polluted
pollution
recycle
recycling
river
rlake
rubber
sand
sea
sewage
shockproof
shoe
shore
surface
thrown
toxic
trash
unhygienic
was
waste
water
wave
weed