英文關鍵字
angle
beverage
bin
blue
bottle
bottles
cap
clean
color
concept
conservation
container
disposal
dispose
drink
dump
eco
ecological
ecology
empty
environment
environmental
garbage
glass
junk
liquid
low
man
material
motion
nature
object
plastic
pollution
recyclable
recycle
recycled
recycling
refuse
reuse
rubbish
shot
slow
symbol
transparent
trash
used
waste
wide