英文關鍵字
activist
awareness
bag
bottle
children
cleaning
climate
collecting
conservation
contamination
cooperation
eco
ecology
ecosystem
environment
environmental
event
forest
garbage
green
group
guy
junk
litter
nature
package
park
participation
people
plastic
pollution
portrait
protection
public
recycle
recycling
reuse
rubbish
smile
team
teamwork
together
trash
tshirt
uniform
volunteer
waste
waving
woman
youth