I cannot be sure.

我不能肯定。

youdao

I cannot be your friend and your flatterer too.

我不能同时是你的朋友又为你的阿谀奉承者。

youdao

I cannot be under pressure, I want to be free.

我不愿意有压力，我喜欢轻松自在。

youdao

"My office is closed. I have to tell my patients I cannot be in France.

VOA: standard.2010.04.19

Hopefully within two years, probably not next year, but within two years, there will be positive psychology class offered, but I certainly cannot guarantee it.

但愿两年内，明年可能性不大，但是两年内，学校会再次开设积极心理学课程，但我无法保证。

哈佛公开课 - 幸福课课程节选

But through technique alone to the extensity even existence cannot be found alone There isn't any or many or much meaning maybe limited cases I don't care.

当时仅仅通过技术,连存在都难以实现,如果这样,有技术也没有什么意义了,或许我举的例子不多。

麻省理工公开课 - 电影哲学课程节选

And in 2014, the health care law helps to ensure that I cannot be denied coverage due to my chronic illness.

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Mr. YACOUB Al-SARRAF (Environment Minister, Lebanon): I cannot be optimistic about the ordeal that the eastern Mediterranean is going to deal with - not only Lebanon.

NPR: Oil Slick Threatens Lebanese Coast

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