There is no knowing where she's gone.

无法知道她到哪去了.

《简明英汉词典》

There is no knowing when he will come.

无法知道他什么时候来.

《现代英汉综合大词典》

There is no knowing how the ancient Egyptians built the pyramids.

不可能知道古代埃及人是如何建造金字塔的.

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There is no knowing what the weather will do.

天气会怎样变化无法预料.

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There is no knowing when we shall meet again.

不知道何时我们再相见.

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There is no knowing but such an accident may happen.

谁能说不会发生这种意外呢?

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There is no knowing what may happen to them.

我们无法知道他们将发生什麽事.

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There is no knowing what he will think up next.

谁也说不准下一次他又会想出什么花样来.

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There is no knowing what has happened.

不知道发生了什么.

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There is no knowing what he is doing.

无法知道他在做什么.

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There is no knowing what may happen tomorrow.

谁也不知道明天将发生什么.

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When he gets on his feet, there is no knowing when he will sit down again.

一旦起立发言, 就不知什么时候再坐下来.

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There is no knowing what may happen if this information gets into the wrong hands.

要是这个情报落到不可靠的人手里,那就不知会发生什么事.

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