You can also perform a test. Take some of the material and add enough water to it to make it seem like you are making bread.

VOA: special.2009.09.14

Question: Doctor, before you perform autopsy ? did you check for a pulse?

问题，医生，在你开始解剖前,你检查了脉搏吗？

耶鲁公开课 - 死亡课程节选

And out here they're a lot more creative and try to like perform for you.

他们会想出很多有创意的节目供你观看。

流浪者们很奇怪 - SpeakingMax英语口语达人

Even if you cannot do mouth-to-mouth rescue breathing, you can perform hands-only CPR.

VOA: special.2009.08.11

One, we can train them to perform these elaborate eye and arm movement tasks as you are seeing here I will describe.

第一，我们可以训练他们去完成眼睛和手臂运动等精细的动作,正如我要介绍的那样。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

If a person's heart stops, would you know how to perform CPR?

VOA: special.2009.05.20

And so you care-- you care about ultimately how much time is my algorithm gonna take to perform on that worst case running time.

因此你最终所关心的是,算法在最坏情况下需要多长的,运行时间。

哈佛公开课 - 计算机科学课程节选

You can see cats perform tricks.

VOA: special.2010.03.22

Poetry, you remember--this is a scientist-- is no more true than religion, but it can perform the function of religion and is therefore capable of saving us.

科学家曾说过-,诗歌并不比宗教更真实，但是诗歌具有宗教的作用,并因此可以拯救人类。

耶鲁公开课 - 文学理论导论课程节选

She can perform magic and she can do monstrous things that you can't imagine a Greek woman doing, at least the Greeks can't imagine, so that's not Greek territory out there.

她会法术,而且能做一些你无法想象的,普通的希腊妇女不会做的事,至少希腊人是无法想象的,因此那里不属希腊

耶鲁公开课 - 古希腊历史简介课程节选