不要谈论这些你不肯定的事情。

Don't talk about such things of which you are not sure.

youdao

本文针对项目活动时间不肯定的特征，分离MCS引入PERT处理项目工期的求解问题。

This time of uncertainty for the characteristics of project activities, combined with the introduction of PERT MCS duration of the project to solve the problem to solve.

youdao

要害是，人力资源经理在对你的牢靠性或者忠诚度不肯定的时候，就会从雇佣者的最好好处动身，做出决定。

Thee key is that HR will make decisions deemed in the best interests of the employer if they are uncertain about your reliability or commitment.

youdao

I was curious; I was even a user assistant at the time, I was certainly a geek at the time and yet I had no sense really of what actually went on in a classroom like this.

我很好奇，在当时我是一名助教，那时我肯定是一个怪胎,我真的不知道,这样的课上讲的是什么东西。

哈佛公开课 - 计算机科学课程节选

The answer that Yeats is giving here is different from saying either "yes" or "no" to that question.

叶芝此处给的答案,既不肯定也不否定。

耶鲁公开课 - 现代诗歌课程节选

And he says, "No, no, I'm too miserable and wretched," And the guy says, "Oh, you must be some kind of a merchant."

他推辞道,不,我的腿脚不利索,那些人答道,你肯定是到处兜售的商人

耶鲁公开课 - 古希腊历史简介课程节选