機器
activity
backhoe
bucket
build
building
bulldozer
coast
construction
development
dig
digger
dirt
earth
earthwork
engineering
equipment
excavate
excavation
excavator
gravel
ground
heavy
hydraulic
industrial
industry
lake
loader
loading
process
road
roadwork
scoop
sea
shore
site
soil
sunlight
sunset
tractor
transport
transportation
truck
vehicle
water
work
workplace