I just can't figure out the subway system at all. As soon as I get underground I lose my sense of direction.

我搞不清这儿的地铁系统。我一进地铁站，就完全失去方向感了。

youdao

The Boston subway opens as the first underground metro system in North America.

1897年——波士顿地铁——北美第一个地下交通系统——开通。

youdao

The underground system is also known as the Tube, due to the characteristic shape of the subway tunnels.

地铁系统因其地铁隧道的典型形状也被称为地下管道。

youdao

looked at things like where should they locate waste water treatment facilities because of the impacts of climate change, what risks are likely to occur to their subway system because it's underground and already requires enormous pumping of water during certain large rainfall events."

VOA: standard.2010.06.14

There is no underground subway system out here to take that can connect LA county to the heart of Los Angeles itself and everything is spaced out with just enough distance that ultimately you have to drive to get from point A to point B.

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