機器
bobcat
brick
bucket
building
bulldozer
car
city
construction
debris
doorway
dust
entrance
equipment
excavation
excavator
garbage
heavy
industrial
industrial machine
industry
junk
lift
litter
loader
loading
machinery
maintenance
metal
mini
mover
outdoors
power
refuse
renovation
rubbish
rubble
scoop
shovel
skid
skid loader
steer
street
tool
town
track
tractor
transport
transportation
trash
truck
urban
vehicle
waste
wheel
work