英文關鍵字
aluminum
background
block
broken
clean
conservation
consumption
crushed
dirt
dirty
discard
discarded
disposal
dump
dumpster
dustbin
ecological
ecology
environment
environmental
facility
flat
garbage
heap
industrial
industry
iron
junk
landfill
leftover
litter
material
metal
outside
package
people
pile
plant
plastic
pollution
recyclable
recycle
recycled
recycling
rubbish
square
steel
trash
waste
work