機器
activity
asphalt
asphalting
background
bitumen
blacktopping
builder
building
bulldozer
compactor
concrete
construction
dig
engineering
equipment
excavator
gravel
heavy
highway
hole
industrial
industry
lane
loader
machinery
maintenance
man
pavement
paving
pressure
renewal
repair
repairing
road
roads
roadwork
roadworks
sign
site
street
tool
tractor
transportation
truck
vehicle
wheel
work
worker
works
yellow