那肯定是一次很棒的聚会。

It must have been one hell of a party.

《牛津词典》

我可以肯定地说，那正是她的原话。

I'm telling you, that's exactly what she said.

《牛津词典》

如果有人能把他的名字安全地与戏剧联系起来，那肯定是皇帝的老师塞内加。

If anyone could safely attach his name to dramas, surely it would be Seneca, the emperor's tutor.

youdao

If they tell you this is what works, that's better than what somebody like me can tell you.

如果他们说这么做比较好,那肯定比像我这样的人说的更有道理

耶鲁公开课 - 基础物理课程节选

That must be the time you spend in preparation in studying.

那肯定是你们应该,花费来准备学习的时间。

麻省理工公开课 - 固态化学导论课程节选

But I'm not so confident anymore that it's the wrong thing to say.

但我不能再肯定那是错误的。

耶鲁公开课 - 死亡课程节选