機器
activity
asphalt
building
bulldozer
business
clay
compactor
construction
construction site
development
dirt
engineer
engineering
equipment
foundation
gravel
highway
highway construction
hydraulic
industrial
industry
labor
machinery
motion
movement
mover
paver
paving
people
quarrying
repairing
road
roadworks
roll
roller
site
smooth
soil
steamroller
structure
technology
tool
tractor
transportation
vehicle
vibration
work
working
workplace