英文關鍵字
broken
crane
crushed
damaged
depot
discarded
dump
environmental
equipment
factory
garbage
industry
iron
junk
junkyard
landfill
lifting
loader
machine
machinery
magnet
magnetic
magnetism
material
mechanical
metal
metallic
metallurgy
old
plant
pollution
processing
recycle
recycling
reuse
rubbish
scrap
sorting
steel
transporting
trash
waste
work
wreckage