機器
activity
angle
architecture
big
bucket
build
building
business
construction
development
dig
digger
duty
earth
earthmover
equipment
excavate
excavation
excavator
gravel
ground
heavy
horizontal
hydraulic
industrial
industry
job
land
large
loader
machinery
massive
mine
mover
object
outdoor
power
quarry
rock
scoop
shovel
site
soil
structure
transport
vehicle
work
working