英文關鍵字
orderly
person
problem
protection
recycling
reduction
responsibility
reuse
garbage
separate
sign
sorting
symbol
discard
type
unidentified
used
various
order
waste
object
management
assortment
covers
box
cardboard
care
clean
conservation
consumerism
container
miscellaneous
household
ecology
ecological
glass
green
hands
keep
indoors
material
zero
plastic