This street is the first in the city to have an underground sewer system.

这条街是本市第一条有下水道系统的街。

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This was the theory behind Canadian artist Peter von Tiesenhausen's decision to bury a sculpture almost four metres underground, beneath a sewer at the main crossroads in the city of Sarnia, Ontario.

BBC: Why make art no-one can see?

East Riding of Yorkshire Council said that an underground spring might have caused damage to a nearby sewer.

BBC: Suspected sewer collapse causes closure of Beverley road

They are thought to have been caused by a collapsed Victorian clay sewer pipe found 1.5m (5ft) underground.

BBC: Medieval bones found underneath Reading's Friar Street