機器
activity
bitumen
bucket
building
bulldozer
city
construction
demolition
dig
digger
dirt
earth
earthwork
engineering
equipment
excavation
excavator
farm
farming
field
grader
gravel
ground
heavy
hydraulic
industrial
industry
isolated
loader
loading
machinery
mover
orange
parked
renovation
repair
road
shovel
site
soil
street
tractor
transport
transportation
truck
vehicle
wheel
work
workplace