There's no saying how he'll react.

很难说他会有何种反应。

《牛津词典》

There's no saying it's not been a sort of blessing to the lot of us.

不可否认的是，这对我们很多人来说都是一种福气。

youdao

It needs no saying that this meeting is of great significance, as it serves as a link between past and present.

应该说，这次会议具有承前启后的重大意义。

youdao

They passed a law saying no southerner could vote if he had taken part in the rebellion against the Union.

VOA: special.2010.02.04

The manuscripts we find from this period are full of marginal notes where the scholars are chiding each other and saying, "No, no, no. It can't be that way."

我们找到了有大量旁注的手稿,学者们相互争论，互不服气“

耶鲁公开课 - 文学理论导论课程节选

It's usually best to respond in a complete sentence rather than saying yes or no which can be ambiguous.

一般来说，回答最好是完整的句子，而不是简单的模棱两可的“是”或“不是”。

Do you mind 课堂 - SpeakingMax英语口语达人

"There is no saying whether this slowdown will be smooth or not, " the report warned.

WSJ: China Reform Suggestions Vague on Party Role

No saying what those relationships are like now, or how these companies view a leaderless HP.

FORBES: Hurd's Hurt

And there is no saying what either side might do when it gets tired of being strung along.

ECONOMIST: Truce or dare | The