機器
activity
backhoe
bucket
build
bulldozer
construction
development
dig
digger
dirt
earth
earthwork
engineering
equipment
excavate
excavating
excavation
excavator
extraction
granite
gravel
growth
heavy
hydraulic
industrial
industry
landscape
loader
loading
machinery
mineral
outdoor
outdoors
power
quarry
quarrying
road
rock
scoop
shovel
site
sky
soil
stone
stones
technology
transportation
vehicle
work