There is a question mark over the future of geriatric care.

老年保健医学的未来是一个问号。

《柯林斯英汉双解大词典》

He hasn't won, so at the moment there is a question mark over Sunday's game.

他还没有赢，所以现在周日的比赛结果还是个大大的问号呢。

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But now there is a question mark over that evidence.

但现在关于这个证据有一个问题。

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And it would raise a question mark over the means testing of social care.

BBC: Merge NHS and social care, says Labour

Taken in its strictest definition, there is a question mark over whether celibacy is possible.

BBC: Is it even possible to live a celibate life?

Committee member Raymond McCartney said the case put a question mark over the future of supergrass trials.

BBC: Mark Haddock UVF supergrass trial cost taxpayers ?11.5m