機器
activity
backhoe
bucket
build
building
bulldozer
concrete
construction
construction site
crawler excavator
development
dig
digger
dirt
earth
earthmoving
earthwork
engineering
equipment
excavating
excavation
excavator
foundation
foundation pit
gravel
heavy
hydraulic
industrial
industry
job
loader
machinery
mover
moving gravel
pit
quarry
road
sand
scoop
shovel
stone
structure
tractor
under construction
vehicle
work
worker
workplace
yellow