英文關鍵字
beach
blue
bottle
cigarette
cleanup
coast
coastline
contamination
crisis
damage
dirty
disaster
dump
ecological
environment
environmental
garbage
handheld
help
horrible
landfill
landscape
litter
messy
nature
ocean
plastic
pollute
polluted
pollution
problems
rubbish
sand
sea
seascape
shore
summer
toxic
trash
vietnam
waste
water