機器
big
blue
bucket
bulldozer
car
coal
construction
crane
dig
digger
dirt
dozer
earth
earthmover
energy
equipment
excavate
excavation
excavator
extraction
extreme
fuel
gravel
heavy
hydraulic
industrial
industry
isolated
loader
machinery
mine
mineral
mining
moving
ore
quarry
rock
scoop
shovel
stone
track
tractor
transport
transportation
truck
vehicle
wheel
work