機器
action
activity
backhoe
big
blade
bucket
building
bulldozer
cloudscape
development
dig
digger
digging
dredge
duty
earth
earthmover
engineering
excavate
excavating
excavator
gravel
ground
heavy
hydraulic
industrial
large
machinery
mine
mining
mover
moving
open
pit
power
quarry
rock
sand
shovel
site
snow
soil
tractor
vehicle
wheel
winter
work
working
yellow