southbound

南行的、往南的、南下的

The southbound train leaves from platform three in ten minutes.

南下的列车十分钟后从第三月台发车。

南向的指车道、路段

Two southbound lanes were closed after the accident this morning.

今天早上发生事故后，两条南向车道封闭。

向南地、往南地

We drove southbound for three hours without stopping.

我们一路往南开了三个小时没有停。