機器
action
activity
anybody
backhoe
black
blade
blue
bucket
building
bulldozer
coal
construction
dark
dead
dig
digger
energy
equipment
excavation
excavator
firm
front
fuel
industry
loader
machinery
mineral
mining
minings
mover
natural
open cast
outdoors
people
pit
power
production
quarry
resource
rock
sand
scoop
the
tractor
transport
unloading
vehicle
wheel
without
work