John doesn't care much about being called "doomed single", he said he enjoys being single.

约翰并不在意被称作“必剩客”，他说他很享受单身的生活。

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Xiaozhao doesn't care much about being called "doomed single", she said she enjoys being single.

小昭并不在意被叫作“必剩客”，她说她很享受单身的生活。

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So they are considered to be people who are doomed to besingle, and that's where "doomed single" came from.

因此，他们都被看作是注定要单身的一群人。 故称，“必剩客”。

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Hathaway won for her role as a doomed single mother forced into prostitution in the adaptation of the stage musical based on Victor Hugo's epic novel.

NPR: 'Argo,' Lawrence, Day-Lewis Win At SAG

John McCain and Bill Bradley got some early year publicity boomlets, although Bradley's inability to win a single primary quickly doomed him.

CNN: In-Depth Specials - 2000 Year in Review

On the one hand, some Conservatives call the single currency a folly of European grandeur, doomed from birth.

ECONOMIST: Bagehot