英文關鍵字
aquatic
beach
bottle
cleanup
climate
coast
damage
earth
eco
ecological
ecology
environment
environmental
garbage
handwriting
holiday
litter
marine
message
natural
nature
nobody
ocean
plastic
polluted
pollution
problem
protest
recycle
recycling
reuse
rubbish
sand
save
sea
shipworm
sign
summer
sun
sustainability
sustainable
trash
travel
waste
water