機器
blade
bucket
building
bulldozer
canal
caterpillar
cement
construction
contractor
crushed stone
dig
digger
dirt
driver
earth
earthmover
earthmoving
equipment
excavation
excavator
grader
gravel
heavy
hydraulic
loader
machinery
mining
mortar
mover
pit
quarry
repair
road
sand
scoop
shovel
site
soil
steering wheel
track
tractor
tractor driver
trench
unloading
wheel
works