英文關鍵字
asphalt
construction
equipment
heavy
industrial
industry
machine
machinery
pavement
repair
road
surface
technology
transportation
vehicle
work
city
concrete
engineering
mill
milling
paving
power
remove
roadway
street
cutter
pave
professional
rehabilitation
removal
renovation
scraper
tool
building
highway
job
maintenance
removing
roadwork
barrier
company
construct
developed
drive
driveway
elimination