機器
above
activity
asphalting
bitumen
building
bulldozer
city
construction
dark
earth
engineering
equipment
excavation
excavator
hard
heavy
highway
industrial
industry
labor
lay asphalt
laying
light
loader
machinery
night
occupation
orange
paving
reconstruction
red
renewal
repair
road
roadwork
site
soil
street
top
top view
tractor
transport
transportation
urban
vehicle
view
work
worker
yellow