The problem lies in deciding when to intervene.

问题在于决定何时介入。

《牛津词典》

The problem lies in that people still haven't realized the importance of environmental protection.

问题在于人们还没有意识到保护环境的重要性。

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But the problem lies in here!

但是问题就在这里！

youdao

Sometimes they're not even aware that that's what they're doing, and I want you to understand that on those occasions I'll most likely respond by inviting you to consider the article of faith that lies behind that question and is creating that particular problem for you.

有时甚至他们自己都不会意识到，我想要你们知道通常在那样的情况下,我的回应会是，请你弄清那个问题背后的信条是什么,及让你明白正是那个信条在给你制造这问题。

耶鲁公开课 - 旧约导论课程节选

The problem lies in how the U.S. Bureau of Labor Statistics calculates the cost of living.

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The problem lies with women who don't have health care and have not been tested.

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The problem lies not just in the personalities involved, but also in the political structures.

ECONOMIST: Debt and politics in America and Europe