英文關鍵字
asphalt
asphalting
big
bitumen
black
blacktop
compactor
construction
crawler
diesel
equipment
finisher
heavy
highway
hopper
industrial
industry
interstate
lane
loader
machine
machinery
metal
pave
pavement
paver
paving
pressure
repair
repairs
road
roadwork
roller
site
street
tar
tractor
transportation
truck
unit
vibration
work
worker