a branch line

• 铁路支线

a branch line的用法和样例：

例句

1. Beslan is an important railway junction, situated on the main line between Rostov-on-Don and Baku, and is the starting point of a branch line to Vladikavkaz.
   别斯兰是重要的铁路枢纽，位于顿河畔罗斯托夫到巴库铁路之间，也是通往弗拉季高加索铁路支线的起点。