英文關鍵字
activism
awareness
bag
bottle
charity
cleaning
collect
collecting
community
conscious
danger
ecologic
ecological
ecology
ecosystem
environment
garbage
generation
grass
industry
issue
life
lifestyle
litter
littering
mess
nature
outdoor
park
people
picking
plastic
pollution
problem
recreation
recycle
recycling
refuse
responsibility
rubbish
save
social
style
tidying
trash
treatment
volunteer
volunteering
waste
world