英文關鍵字
bottle
bottles
bus
butts
cigarette
collection
concept
contamination
covid
dirt
dirty
dump
earth
ecology
environment
environmental
garbage
grass
green
hazardous
health
human
junk
landfill
leaf
life
litter
littering
mask
medical
nature
off
open
outdoor
outdoors
packaging
people
plastic
pollution
problem
protect
protection
recycling
rubbish
spread
stop
sun
symbol
trash
virus
waste
world