But I know for sure that she was my mother's best friend.

可是我知道了，她就是我妈妈的好朋友。

youdao

I haven't made up my mind yet. But I know for sure I need to do something really interesting.

我还没有最后决定。但我一定要做一些真正有意思的事情。

youdao

He will come to a team in Europe but I dont know which one, but I know for sure he will leave Brazil.

他会加盟欧洲的球队，但是我不知道是哪一支，不过我确定他会离开巴西。

youdao

But I know for sure that most of us do want to trust our co-workers, friends, and institutions.

FORBES: I Don't Trust You. Now What?

But what I do know for sure is that by subsidizing the marriage of Bear Stearns and JP Morgan, the government has removed some of the loss from the profit and loss system.

NPR: Does Bear Stearns Bailout Set a Bad Precedent?

But here is what I know for sure.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event -- Reno, NV