機器
accumulation
background
bag
bags
bin
birds
bottles
bulldozer
collecting
collection
conservation
consumer
consumerism
consumption
crap
dirt
dirty
disposal
dispose
domestic
dump
dumpster
ecology
environment
exterior
garbage
heap
industrial
industry
junk
junkyard
landfill
litter
machinery
mess
operator
outdoors
outside
paper
pile
plastic
pollute
pollution
recycle
recycling
refuse
resource
reuse
rubbish
scrap
stack
toxic
transport
transportation
trash
vehicle
waste
yard