機器
activity
backhoe
bucket
building
bulldozer
cloud
construction
construction industry
construction machinery
construction site
development
dig
digger
digging
dirt
earth
earthmover
engineering
equipment
excavate
excavation
excavator
foundation
gravel
ground
heavy
hydraulic
industrial
industry
land
loader
loading
machinery
mine
mining
mover
road
sand
scoop
shovel
shoveling
site
soil
tractor
transportation
truck
vehicle
work
working