英文關鍵字
air
asphalt
bus
car
delivery
destination
distance
freight
fuel
highway
lane
markings
oil
pollution
public
road
slick
speed
transport
transportation
travel
truck
英文關鍵字
air
asphalt
bus
car
delivery
destination
distance
freight
fuel
highway
lane
markings
oil
pollution
public
road
slick
speed
transport
transportation
travel
truck