英文關鍵字
assistance
bag
bottle
care
charity
cheerful
clean
community
dirty
disposal
earth
eco
ecology
ecosystem
event
female
friendly
friendship
garbage
green
group
happy
help
litter
man
nature
package
picking
plastic
pollution
portrait
positive
recycle
recycling
responsibility
rubbish
shore
smiling
social
summer
team
teamwork
together
trash
volunteer
waste
young