Our dream holiday turned into a nightmare.

我们梦想的假日变成了一场噩梦。

《牛津词典》

Patients rehearse the new dream, which could be a less haunting version of the nightmare or a completely different dream.

病人们预演新梦境，它可能是噩梦另一个不那么恐怖的版本，或者是一个完全不同的梦。

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The mystics said that Lester had started the blaze himself with a bad dream, Lester's nightmare a spark, the house a tinderbox.

神秘主义者说，是莱斯特自己用恶梦点燃了火，他的恶梦是火星，他家屋子则是燃料箱。

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But again, if you think of the possibility of doing that for all eternity and never getting away from it, never being free from it, the positive dream of immortality, I think, becomes a nightmare.

但是想想如果永远,那样下去，永远不法逃离，永远无法解脱，永生的美妙梦想，就会变成恶梦。

耶鲁公开课 - 死亡课程节选

However, it is a kind of collective dream, or nightmare, a folk tale whose truth in not in the historicity or veracity but social reality.

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Something I was dreaming about, but then when I actually touch it, it is more nightmare than a dream.

CNN: Interview with Ang Lee

Yet she has written a thoroughly researched and heavily documented book, Fannie Mae and Freddie Mac, Turning the American Dream Into a Nightmare, (Bloomsbury 2012) in which she shows that an ideological bias in favor of low-income lending led the U.S. government over a sixteen year period to promote subprime and other low quality mortgages, degrade mortgage underwriting standards, and cause both the mortgage meltdown and the global financial crisis.

FORBES: Book Review: Oonagh McDonald's Fannie Mae and Freddie Mac: Turning the American Dream Into a Nightmare