英文關鍵字
behaviour
bottle
careless
cause
concept
conservation
consumer
consumerism
consumption
dirt
dirty
disposal
dump
eco
ecology
environment
environmental
field
free
garbage
global
grass
green
health
human
irresponsible
issue
land
littering
man
meadow
nature
object
outdoors
people
person
plastic
pollution
problem
recycle
rubbish
rude
society
throwing
toxic
trash
used
waste
water
wild