the southbound train from the Scottish Highlands从苏格兰高地发出的南行列车

Southbound traffic is being diverted via Northampton.南行车辆正经由北安普敦绕道行驶。

The southbound carriageway is blocked.南向车道堵车了。

The suspect vehicle was southbound on the M1.嫌犯车辆正沿1号高速公路向南行驶。