英文關鍵字
asphalt
asphalting
balance
big
bitumen
black
construction
drudge
equipment
finisher
heavy
hopper
industrial
industry
interstate
laborer
lane
laying
loader
machine
machinery
objects
occupation
pave
pavement
paver
paving
pressure
repair
repairs
road
roadwork
spreading
street
tar
transportation
truck
unit
vehicle
vibration
vibrator
work