機器
activity
asphalt
asphalting
bitumen
bucket
building
bulldozer
business
car
city
concrete
construction
construction site
day
development
dirty
equipment
excavator
gravel
heavy
highway
industrial
industry
loader
machinery
outdoor
pavement
paving
reconstruction
renewal
repair
road
roadwork
shovel
site
special
street
surface
technology
tractor
traffic
transport
transportation
truck
urban
vehicle
work
worker
yellow