英文關鍵字
activity
altar
are
asphalt
asphalting
bitumen
black
bridge
building
catholic
church
close
compactor
concrete
construction
cross
engineering
equipment
gravel
heavy
highway
industrial
industry
labor
laying
loader
machine
machinery
new
occupation
operator
outdoor
pavement
paver
paving
profession
renewal
repair
repairing
road
roadwork
roller
service
services
site
steamroller
street
top
tractor
transport
transportation
truck
urban
vehicle
view
way
work
worker