英文關鍵字
asphalt
construction
equipment
industrial
industry
machine
pavement
repair
road
job
machinery
transportation
work
paving
heavy
highway
vehicle
bitumen
pave
paver
street
compactor
roadwork
asphalting
gravel
worker
black
builder
tar
activity
laborer
laying
man
occupation
site
truck
new
pressure
roller
surface
tarmac
reconstruction
renewal
roll
steamroller
people
construct
drive