英文關鍵字
background
black
bottle
care
carelessness
clean
concept
dirty
earth
ecology
ecosystem
empty
environment
feet
foot
garbage
grass
green
ground
habitat
human
legs
lifestyle
litter
lying
natural
nature
negligence
old
outdoors
park
person
plastic
pollution
pond
problem
protection
rubbish
shoes
summer
trash
waste
white
woman