機器
environmental
abstract
aluminum
background
broken
cnc
corrosion
crushed
dirty
discarded
disposal
dump
ecology
environment
garbage
grabber
heap
industrial
industry
iron
isolated
junk
junkyard
landfill
metal
metallic
old
pieces
pile
pollution
recycle
recycling
reuse
rubbish
rust
rusted
rusty
scrap
scrapyard
silver
stack
steel
technology
trash
truck
tsar
waste
white
yard