这是一个使我们大家都担忧不已的问题。

This is a problem that haunts all of us.

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我过去常为个性以及那种自负担忧不已。

I used to worry a lot about personality and that sort of egotism.

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鉴于中国未来将会产生大量单身男性，美国杨伯翰大学的教授瓦莱丽赫德森表示担忧不已。

The prospect of a large surplus of single men in China alarms Valerie Hudson, a professor at Brigham Young University in the United States.

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