機器
aerial
building
bulldozer
construct
construction
contain
contractor
destruct
dig
digger
dirt
drive
earth
engineering
equipment
excavation
excavator
front
gravel
ground
heavy
hydraulic
industrial
industry
keep
large
loader
machinery
mine
mining
mover
pit
prepare
quarry
rock
sand
site
soil
stone
store
tractor
transport
transportation
truck
vehicle
work
working
worksite