As to that, I cannot be sure.

至于那个，我也不能肯定。

youdao

I cannot be sure.

我不能肯定。

youdao

Some of the lining epithelia appear mucinous, but I cannot be sure without high power views.

部分衬复上皮呈粘液性，但因未提供高倍图像，我不能确信。

youdao

Mr Justice Nicol said there was "no pathological evidence that Tia had been sexually assaulted, but it could not be excluded...so I cannot be sure from these features either that the photograph was taken after Tia had died".

BBC: Sentencing remarks on Stuart Hazell from Mr Justice Nicol

If the US can increase production by 25% within the decade, could the world?? I doubt it, but we cannot be sure, because there are bound to be fields in other countries ripe for exploitation with the same technology.

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What I can say for sure, however, is this: We cannot afford to be in the dark and the cold for too long.

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