VOA慢速英语:Early American Railroads Shape Modern Language

短语讲解：

1. Today we talk about railroads.

talk about 讨论，谈论
例句：He went on to talk about his accident.
他接着谈到了他的意外事故。

2. To go off track means to move away from one’s intended purpose or goal.

go off 离开;消失
例句：He fired but his pistol failed to go off.
他试图开枪，但没有打响。

3. To stay on track means to pay attention to your goal or purpose.

pay attention to 注意
例句：Don't pay attention to anything he says. He lies like a gas meter.
不要理睬他的话，他一味撒谎。

4. If you reach the end of the line you have come to the end of something.

come to the end of 走到尽头
例句：He has come to the end of his money.
他的钱花完了。