It takes strong character to find happiness in the face of adversity, but scientists often have found that aspect too vague a topic to study.

在逆境中寻找幸福需要坚强的性格，但科学家常常发现，这个方面太含糊了难以对其进行研究。

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Both words are normally used in so vague a way that any definition is liable to be challenged, but one must draw a distinction between them, since two different and even opposing ideas are involved.

通常这两个词使用起来都表意不清，以至于任何对这两个词的定义都受到质疑。但是，我们必须要分清两者，因为这关系到两种不同的、甚至是截然相反的思想。

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Dr. Velayati gave a vague but negative response.

韦拉亚提医生做出了一个含糊但否定的答复。

《柯林斯英汉双解大词典》

A theory could be so vague and all-encompassing that it can't even be tested.

一个理论有可能因为概念模糊,且体系庞大而难以得到验证。

耶鲁公开课 - 心理学导论课程节选

It didn't look very much like us at all, but we could sort of see the resemblance in a vague kind of way, right?

看起来几乎不怎么像我们,但我们可以或多或少的,找到些和我们相似的地方

耶鲁公开课 - 死亡课程节选

These invisible, vague things can never form the basis of a serious science.

这些不可见，定义模糊的东西,不能被划入严谨的科学范畴里。

耶鲁公开课 - 心理学导论课程节选

More a vague Democrat than a fierce one, he rarely mentions George W. Bush in his statements, although he tells me he would never have represented the Texas Governor.

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It signals to society that a person knows how to make a vague effort and achieve a goal.

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The Democrats have a vague road map and a difficult course to navigate.

NPR: Let's Talk About The Risks of Undivided Government