所以肯定是很老，大概4十亿年……几百百万年。

So must be really old about 4 billion years give take to few hundred million years.

youdao

有天我不知道在读什么的时候，那时候还没有博客或者推特，所以肯定是Princetonian校刊什么的。

In one day I was reading, whatever I was reading at that time There are no blogs or twitters or anything else, it must have been the Princetonian or something.

youdao

她很少给我电话的，所以我当时想肯定是发生了什么事了。

She seldom gave a call to me, so I thought there must be something wrong.

youdao

And when I review these various arguments, I come away thinking the better explanation falls with the physicalist.

所以当我考察各种论证时,我不会说最佳解释肯定是,物理主义的

耶鲁公开课 - 死亡课程节选

So I'm definitely in the classroom, getting hands-on to experience dealing with kids.

所以我肯定是有在教室里，亲自实践和小孩相处的经验。

我的梦想是当教师 - SpeakingMax英语口语达人

So, our first orbital that an electron 1 s must be coming from is the 1 s.

所以，我们的第一个肯定有电子,被打出的轨道是。

麻省理工公开课 - 化学原理课程节选