沿线的英文：
along the line

参考例句：

He told me which wells were usable along the road.
他告诉我沿线哪些井是可用的。

He told me which wells were usable along the road.
他告诉我沿线那些井是可用的。

Lookouts are spotted along the coast.
守者配置于海岸沿线。

Mark the new slash line and slash along to the bust point
标出新的剪开线并沿线剪到胸点为止。

Dropping its mostly second-class passengers at this small town or that, few people were left to be disgorged in Gilly
一路上已经把二等车厢里的大多数乘客都抛在沿线的这一个或那一个小镇上了，所以到达吉利时只剩下几个人。

along是什么意思：
prep. 沿着；顺着
adv. 向前；一起；来到

The days rolled along.
日子在流逝。

Come along and take potluck.
请来吃顿家常便饭。

The wagon jogged along.
马车颠簸前行。

The parade stalked along the highway.
游行队伍沿着公路阔步前进。

The car wheeled along the road.
汽车沿着路行驶。

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。