機器
aluminum
automobile
car
collecting
construction
courtyard
devices
dirty
discarded
disposal
dump
dumped
ecology
engines
environment
garbage
heap
industrial
industry
iron
junkyard
metal
old
pile
plans
plastic
pollution
precious
raw material
recyclable
recycle
recycled
recycling
rust
rusty
scrap
sorted
stack
steel
substance
texture
tires
trash
used
vehicle
waste
wreck