機器
action
activity
background
bucket
building
bull
bulldozer
construction
contractor
dig
digger
dirty
dozer
earth
equipment
excavation
excavator
gravel
ground
heavy
hydraulic
industrial
industry
job
large
loader
machinery
mine
mover
nature
power
sand
scoop
shovel
site
skid
sky
steer
tractor
transport
vehicle
wheel
white
work
yellow