英文關鍵字
activist
altruism
bag
bottle
care
charity
cheerful
cleaning
community
concern
donation
eco
ecology
environment
female
group
happy
help
leisure
litter
nature
outdoors
outside
package
park
participate
people
plastic
pollution
portrait
protection
recycle
recycling
rubbish
safe
save
selfless
smiling
social
summer
team
together
trash
tshirt
volunteer
volunteerism
waste
woman
working