英文關鍵字
background
bag
beach
bottle
boy
caucasian
child
children
clean
cleanliness
cleanness
collect
collecting
collection
collects
concept
container
cups
dad
dump
earth
ecology
environment
father
finger
full
garbage
green
hand
his
holding
junk
kid
kids
litter
man
nature
outdoors
paper
parents
pick
planet
plastic
points
pollution
protection
recycling
rubbish
sea
small
summer
teach
teaches
teaching
throw
trash
waste
where