英文關鍵字
ashcan
audio
bulldozer
cleaning
collecting
collector
debris
dirt
disposal
dozer
dump
dumping
dust
dustbin
dusthole
dustman
ecological
ecology
environment
environmental
fill
garbage
global
hole
household
industrial
industry
junk
junkyard
land
landfill
litter
lumber
mess
ordure
pollution
recycle
recycling
refuse
rubbish
sanitary
scavenger
scrap
scrapheap
sound
spoil
sweeping
tip
trash
waste