英文關鍵字
activist
aware
bag
care
clean
cleaning
closeup
collecting
community
earth
eco
ecological
ecology
ecosystem
environment
environmental
female
forest
garbage
girl
green
group
help
litter
male
man
material
nature
park
participation
picking
plastic
pollution
preservation
project
protection
recycling
resource
responsibility
rubbish
save
schoolgirl
smile
society
together
trash
volunteer
volunteering
waste
wildlife