英文關鍵字
bin
bio
bottle
box
can
cardboard
clean
closeup
collect
collection
concept
conservation
container
disposal
dustbin
earth
ecological
ecology
environment
environmental
garbage
green
household
litter
materials
object
organic
paper
person
plastic
pollution
protect
protection
recycle
recycling
reduce
refuse
responsible
reuse
rubbish
segregation
separation
sign
sorting
symbol
throwing
trash
utilize
waste