I don't travel on the underground late at night.

我深夜不坐地铁。

《柯林斯英汉双解大词典》

If you want to get around London fast, the Underground is your best bet.

如果你想在伦敦快速出行，最好是乘地铁。

《牛津词典》

Simon takes the underground.

西蒙乘地铁。

youdao

Harriet went from house to house that way on the Underground Railroad.

VOA: special.2011.02.13

I've seen like harp players on the underground and then classical music to kind of...

我在地下通道见过弹竖琴的人，也见过弹奏古典乐的……

街头表演的魅力 - SpeakingMax英语口语达人

Alpheus is also the god of erotic pastoral poetry, it turns out, and this god is literally gone underground during the terrifying appearance of Saint Peter.

阿尔甫斯也是描写爱欲的诗歌之神，从诗句上来看，这位神灵在圣彼得面前,悄无声息的隐匿了踪影。

耶鲁公开课 - 弥尔顿课程节选

The underground chapel contains the remains of around 4, 000 friars buried between 1500 and 1870.

BBC: Rome��s most mysterious places

Considering its age, the underground city is in excellent condition and is accessible today via numerous tours.

BBC: Six lesser-known wonders of the ancient world

'Poems on the Underground' in London, introduced a range of poets to millions of commuters.

BBC: Valley Lines poets make tracks