機器
backhoe
bucket
building
construction
construction industry
construction machinery
construction site
crusher
danger
demolishing
digger
dirt
dust
earth
equipment
excavate
excavation
excavator
gravel
heavy
hydraulic
industrial
industry
machinery
material
mover
power
road
rock
sand
shovel
shoveling
site
stone
structure
tool
transport
vehicle
vehicle scoop
work
yellow