英文關鍵字
activist
autumn
bag
bin
boy
can
care
child
clean
collecting
concept
container
cute
disposal
dump
ecology
education
energy
environment
environmental
funny
future
garbage
grass
green
happy
junk
litter
little
nature
outdoor
package
park
pecking
people
picking
planet
plastic
playground
pollution
protection
recycling
rubbish
take
throw
throwing
toddler
trash
waste