M: No, but I am sure it won't take more than an hour.

M：不知道，不过我确定应该不超过一个小时。

youdao

DON BRADLEY: Yes, I like these two still but I 'm not sure about that one.

堂。布拉德利：是的，我还是喜欢这两套，但对那个不是很确定。

youdao

I`m not sure whether it`s good for him being a university student at this age. But I hope he can get a good job in the future, " she said.

我不知道他现在这个年纪去读大学是好还是坏，但我希望他将来能找份好工作。

youdao

"Celebrating with our family." "Presents!" "I usually get presents that say Santa Claus on them but I'm not really sure if they're from him."

VOA: special.2009.12.21

And I'm sure you don't remember, but one of the things I had in my recipe, is beat egg whites until stiff. OK.

我相信你们不记得了，但是我说过我食谱中的一件事情是，搅拌蛋清直到变浓稠，好。

麻省理工公开课 - 计算机科学及编程导论课程节选

And then our drop date is normally, I'm not exactly sure when, but it's actually probably in November,

然后退课的日子通常是，我不确定什么时候，不过其实大概是十一月，

对于返校日 - SpeakingMax英语口语达人

"I'm tired because I'm still not at 100 percent, but I'm sure I will return to be how I was before the injury -- scoring goals, having good games and helping the team, " Ronaldo, who returned to training on Friday, told Spanish television channel Telemadrid.

CNN: Fit-again Ronaldo ready for 'El Clasico'

"I'm not looking forward to going back to being technical director but I'm sure I'll enjoy it when I get there, " added Gradi.

BBC: Relegation not a disaster - Gradi

"They've made some commitment to do something about it but not enough and I'm frustrated about that but I'm sure we will get somewhere in the near future, " she said.

BBC: Bradley Manning