In some cities, such as Chicago, they have an elevated train, which they call the El.

在有些城市，比如芝加哥，有高架火车，他们称之为高架线（El）。

Start your visit in The Loop - the central business district encircled by the 'L', Chicago's elevated train line.

您可以从Loop区展开行程，这里是芝加哥的中心商业区，由高架捷运系统「L」所环绕。

Has anybody any idea how long it takes an elevated train going at normal speed to pass a given point?

谁知道高架列车以常速经过一个固定的点需要多长时间？

Officials in Mexico are promising a quick investigation after an elevated train track collapsed late Monday, killing at least 24 people.

墨西哥一列高架列车轨道星期一晚间发生坍塌，造成至少24人死亡，墨西哥官员承诺将迅速展开调查。

While the elevated train rumbled overhead on its track, quite literally the room reverberated with each passing train car.

当高架火车在轨道上隆隆作响时，房间确实随着每节经过的火车车厢而回荡。

The " subway, " of course, is a type of train that goes typically underground, although sometimes it may be an elevated train, what is called in cities that have elevated trains an " el, " short for elevated, meaning up above the ground.

当然，“地铁” 是一种通常在地下行驶的火车，尽管有时它可能是高架火车， 在拥有高架火车的城市中， 所谓的“el” 是高架的缩写，意思是在地面之上.