英文關鍵字
above
activist
activists
bag
clean
cleaning
cleanup
collect
community
eco
ecological
ecology
forest
friendship
garbage
gloves
group
help
litter
meeting
multiethnic
organization
park
people
picking
planet
plastic
problem
recycle
recycling
rubbish
save
social
team
teamwork
together
togetherness
top
trash
volunteer
volunteering
waste
wood