機器
activity
architecture
backhoe
build
building
bulldozer
construction
construction site
dig
digger
dirt
dirty
dredger
dust
earth
earth transportation
earthwork
engineering
environment
equipment
excavate
excavation
excavator
exterior
gardening
ground
heavyduty
hydraulic
industrial
industry
job
land
landscape
landscaping
loader
loading
machinery
mover
outdoor
road
sand
scoop
shovel
soil
transport
transportation
vehicle
work
working