英文關鍵字
activity
bag
beach
bottle
clean
cleaner
cleaning
coast
collected
collecting
concept
conservation
day
dirt
dirty
disaster
dump
earth
ecology
environment
garbage
girl
green
holding
hot
natural
nature
object
ocean
outdoor
people
picking
plants
plastic
pollute
pollution
problem
recycle
responsibility
rubbish
sandy
sea
sunny
trash
unrecognizable
volunteer
walking
wastes
water
young