You have to: Detroit has no commuter trains, no subway, metro or underground.

你必须这么做，因为底特律既没有火车，也没有地铁。

youdao

I should note that it would have been very easy for me to take the metro, the underground subway to the complex, as there is a station just by the gates of the opera.

需要声明的一点是，对我而言，乘地铁到组楼附近十分便捷，因为在歌剧院的大门外便是一个地铁站。

youdao

Later on, while I waited with hundreds of people to get on the D.C. Metro subway system, a friend and I looked through photos from the day by projecting the camera's images onto a concrete wall.

后来我跟几百个人一起等地铁时，一个朋友和我将照片投射到一面混凝土墙壁上，浏览了当天的照片。

youdao

Like, we say the tube, they say the metro or the subway.

比如地铁的说法，我们说tube，他们说metro或者subway。

美式英语和英式英语 - SpeakingMax英语口语达人

the underground, or the subway, the Metro that we call it,

还有地下交通，比如地铁，我们通常称之为Metro，

旧金山的公共交通 - SpeakingMax英语口语达人

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Metro subway train plowed into another subway train.

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