英文關鍵字
activist
background
bag
black
blue
blurred
bottle
care
clean
collect
concept
dirty
earth
ecology
ecosystem
environment
garbage
gloves
grass
green
ground
habitat
hand
human
lifestyle
litter
natural
nature
old
outdoors
park
people
person
pick
picking
plastic
pollution
pond
problem
protection
rubbish
summer
trash
waste
woman