英文關鍵字
ashcan
cleaning
collecting
collector
debris
dirt
dirty
disposal
dump
dumper
dumping
dust
dustbin
dustcart
dusthole
dustman
ecological
ecology
environment
fill
garbage
hauler
heap
industrial
junk
junkyard
land
landfill
litter
lorry
lumber
mess
ordure
pollution
recycle
recycling
refuse
rubbish
sanitary
scavenger
scrap
spoil
sweeping
tip
tipper
trash
truck
unload
vehicle
waste