铁路线的英文：
Line

参考例句：

It is veined by railroads.
铁路线四通八达。

A double-track railway line
双轨铁路线.

railroad underbridge
跨线桥(铁路线在下)

railroad overbridge
铁路跨线桥(铁路线在上)

This is a disused railway line.
这是一条废弃的铁路线。

Rail roads thrusting into hilly regions
向山区延伸的铁路线

The two railway lines link up at the station.
两条铁路线在这个车站接轨。

The railway line runs parallel with / to the highway.
铁路线和那条公路平行。

Casablanca was the terminus of a long, rickety railway line.
卡莎布兰卡是一长而软弱的铁路线的终点。

New railroads are rapidly thrusting into the hilly regions.
新的铁路线迅速向山区延伸。

line是什么意思：
n. 线条，界线，路线；条纹；排；铁路线；生产线；台词；态度；防线；前线
v. 用线标出，划线于；使布满纹络；加衬里于；排队，排列成行

This is a lined trunk.
这是一个有衬里的箱子。

They are politically in line.
他们在政治上意见一致。

On a map there are horizontal lines and vertical lines.
在地图上有水平的线和垂直的线。

To inscribe(a line or lines)with a pencil or other marking implement.
画用铅笔或其它做标记的器具刻线

The new proposal is in line with our general line.
新建议和我们总的原则是一致的。