機器
activity
backhoe
blade
blue sky
bucket
building
bulldozer
caterpillar
construct
construction
contractor
crawler
development
dig
digger
dirt
earth
earth mover
earth moving
earthmover
earthmoving
equipment
excavation
excavator
ground
heavy duty
hydraulic
industrial
industry
machinery
metal
metal tracks
mine
mover
moving
quarry
roadworks
sand
sandpit
scoop
site
soil
track
tractor
transport
under construction
vehicle
work