機器
activity
backhoe
broken
bucket
build
bulldozer
chain
civil
construction
development
dig
digger
dirt
earth
earthmover
earthwork
equipment
excavate
excavation
excavator
granite
gravel
ground
heavy
hill
horizontal
hydraulic
industrial
industry
large
loader
machinery
metal
mine
mover
perspective
pneumatic
power
quarry
river
rock
scoop
shovel
site
soil
stones
tractor
vehicle
water