機器
action
activity
backhoe
blade
bucket
build
building
bulldozer
caterpillar
construction
development
dig
digger
digging
dirt
earth
earthmover
equipment
excavate
excavating
excavation
excavator
gravel
ground
heavy
hydraulic
industrial
industry
loader
machinery
mine
mining
mover
pit
power
quarry
sand
sandpit
scoop
shovel
site
soil
tractor
unloading
vehicle
work
working
yellow