機器
activity
backhoe
bucket
build
building
bulldozer
construction
construction site
contractor
crawler
development
dig
digger
dirt
earth
earthmover
earthwork
engineering
equipment
excavation
excavator
ground
heavy
hydraulic
industrial
industry
iron
land
landscape
loader
loading
machinery
metal
mover
power
road
sand
scoop
shovel
site
sky
soil
technology
track
tractor
vehicle
wheel
work
yellow