機器
activity
backhoe
blade
building
bulldozer
construction
development
dig
digger
dirt
drill
drilling
earth
engineering
equipment
excavate
excavating
excavation
excavator
granite
ground
hammer
heavy
highway
hydraulic
hydraulics
industrial
industry
land
landscape
machinery
mining
mover
power
quarry
road
rock
sand
shovel
site
soil
spain
stone
track
vehicle
work