英文關鍵字
actions
asphalt
asphalting
balance
bitumen
blacktop
blacktopping
construction
crawler
drive
drudge
equipment
finisher
gravel
heavy
hopper
industrial
industry
laying
machine
machinery
objects
occupation
pave
pavement
paver
paving
repair
repairs
road
roadwork
screed
site
street
tar
tractor
transportation
truck
unit
vehicle
vibrator
work