nightmare，frightening dream，horrible dream，[电影]Ancient Riors；

[例句] 毕业税具体操作起来不啻一场行政噩梦。 In practice a graduate tax is an administrative nightmare.

[例句] 对大多数父母来说，发现自己的孩子吸毒简直就是场噩梦。 Discovering your child takes drugs is a nightmare scenario for most parents.

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