Eating more than needed is for sure not healthy.

吃得过多超出所需肯定是不健康的。

youdao

You know, but that doesn't kind of change my life, for sure not.

你知道，但是这不会改变我的生活，确定不会。

youdao

He prowled around the room, not sure what he was looking for or even why he was there.

他在房间里悄悄地走来走去，不知道自己在找什么，甚至不知道自己为什么在那里。

《柯林斯英汉双解大词典》

The scientist says this mission has been planned for many years, but he is not sure when it will happen.

VOA: special.2010.05.25

You feel physiologically aroused but you're not completely sure why, and you have to make up an explanation for it.

你感觉到性觉醒,但是不能确定是什么原因，你不得不给出一个解释。

耶鲁公开课 - 心理学导论课程节选

I'm not sure whether we'll use the Classes server to have you sign up for discussion sections online, or whether we will do it the old-fashioned way and have you sign up on forms that we'll give you here in class.

我还没想要是用校网站,让大家在线讨论，还是用传统的,课堂讨论。

耶鲁公开课 - 新约课程节选

And for sure not-quite-grown-up "adult" males often have issues with learning to be responsible for their share of things - like maybe sometimes the problem is with the guy?

FORBES: Magazine Article

For sure not, bore them to death.

FORBES: Herman Cain's Secret Exploding Lady Gaga Bomb

And no one knows for sure -- not even the dueling Upper West Side mothers.

CNN: Should babies be allowed to 'cry it out'?