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

No one knows what she might be doing now, but not washing up, that's for sure.

没人知道她现在在干什么，但肯定不是在洗餐具。

youdao

If you're not sure, ask for honest feedback from trusted friends, colleagues and professionals.

如果你不确定，向你信任的朋友、同事和专业人士寻求诚实的反馈。

youdao

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

Yahoo said it did not know for sure that the file had been taken but told AFP it could not "deny the possibility".

BBC: Millions hit by Yahoo Japan hack attack

Except for a comment about having scouts around the country, Deb and Rob do not know for sure how they were chosen to get that letter.

FORBES: How The Little Boston Shop Polka Dog Bakery Wound Up In Target

Even if her own security advisers point their fingers at Jemaah Islamiyah, Ms Megawati may not know for sure they are right.

ECONOMIST: Terror in the shadows | The