機器
activity
backhoe
big
bucket
build
bulldozer
concrete
construction
construction site
contractor
development
dig
digger
digging
earth
earthmover
engineering
equipment
excavate
excavating
excavation
excavator
gravel
heavy
hydraulic
industrial
industry
loader
machinery
movers
outdoor
outdoors
power
road
sand
scoop
should
shovel
site
sky
tractor
vehicle
work
workplace