Many people believe building an underground city is one way to alleviate the problem.

许多人认为，建造地下城市是减缓该问题严重性的一种方法。

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Its obviously an underground city where the last remaining humans live and the robots are coming to kill us.

很显然嘛，这里是人类最后的地下城市，机器人就要杀过来咯。

youdao

Working at an underground city storage facility, a young man discovers evidence of a murder and vows to bring the killer to justice.

一名年轻人工作在城市的地下储藏工厂，他发现了一起命案的证据，他发誓要将凶手绳之于法。

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And it's not a short drive in what is in effect an underground city.

CNN: Tuchman: Journey into collapsed mine was nerve-racking

The former features an ancient underground city (reached by modern-day escalators).

WSJ: Unforgettable Trips Abroad: A Farmhouse in Italy, Al Petrogallo

Changes in perception may be needed as JTC are now looking into heading downwards for spaces housing people -- rather than oil -- in the form of an underground science city.

CNN: Why Singapore is putting its oil back into the ground