highway main line

• 公路干线

highway main line的用法和样例：

例句

1. You can regain the main road by turning left two miles ahead.
   你在前面两英里处左转，就可回到公路干线。
2. The main road was flooded so we had to go round by narrow country lanes.
   公路干线遭水淹没，我们只得择乡间小径绕行。