After the second explosion, all of London's main train and subway stations were shut down.

第二次爆炸后，伦敦所有的主要火车站及地铁站都被关闭了。

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Many train and subway services are cancelled.

很多火车和地铁被迫停运了。

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In Japan, the three most popular means of getting to school are bus, train and subway.

在日本，最主要的三种上学方式是公共汽车，火车和地铁。

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From the tragedy in Moscow's subway, to the 2004 Madrid train bombings and the explosions in London's public transit system the following year, experts say no country is immune to terrorism.

VOA: standard.2010.03.30

Again, I don't have data to back this up, but just common sense suggests to me that the common case is if I'm on the subway platform I want to get on that train and maybe I want to get back and where are those two buttons, right?

此外，我没有数据来备份这个，但是常识告诉我，常见的情况是,如果我站在地铁站台上，我想乘上地铁,可能我还想回来,那么哪里能找到这两个按钮，对不？

哈佛公开课 - 计算机科学课程节选

If you're riding on a subway, a crowded train, and you wish to speak to your neighbor,

如果你正在乘地铁，车厢里很是拥挤，你想跟你的邻座说说话，

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New York lawmakers, for example, gave train and subway security a "D" grade, citing unprotected tunnels and rail yards and a lack of surveillance.

CNN: On alert on the rails

The typical scenario involves a woman getting on a subway train and is immediately circled by two or three men.

FORBES: Special Report: The Horrific World of Online Sexual Violence Against Women - Forbes

In a bold gesture at street level, a swooping oculus projects out over the subway and commuter train stairs.

WSJ: Zaha Hadid, Farshid Moussavi, Louis Kahn and the Best of 2012 in Architecture