火车晚点了，显然是因为轨道上有树叶。

The train was delayed, apparently due to leaves on the ___line.

北线是伦敦地铁中最差的线路。

The Northern ___Line is the worst on the London Underground.

伦敦和兰普顿之间的火车线路关闭了，所以你现在必须乘坐"ABC 长途汽车"，这也更便宜。

The train ___line is closed between London and Lampton so now you have to use "ABC Coaches", which is also cheaper.