Experts at Penn State University say the answer is simple: when the undesirable qualities outweigh the good qualities.

VOA: special.2011.07.26

And so I would ask you to think about a couple of simple questions as you move through this book, and as you think about what I have to say about it.

所以，我想让大家在继续读这本书时,想出一些简单的问题，并且想想我会对此说些什么。

耶鲁公开课 - 1945年后的美国小说课程节选

Let's say you feel like you're asking your boss for something very simple, something you deserve.

假设你想向老板要求一样非常简单的东西，一样你应得的东西。

It's like 课堂 - SpeakingMax英语口语达人

Experts say these simple steps can prevent the health problems linked to heat.

VOA: special.2010.07.27

Now, what did I want to do? I wanted to check membership. I want to do search. Well that's simple. Given that representation and some value, I just say gee is it there?

现在，我需要做什么？,我要做成员检查，我要做查找,这就很简单了，给了即定的表示和一些值,我只需要说喂在那儿吗？

麻省理工公开课 - 计算机科学及编程导论课程节选

They should have some courage, and they should stop it. It is no good for the players, and somehow I hope the players have the ability around the world to stand up and say we are not playing on this, plain and simple."

VOA: standard.2009.06.07

b It's pretty simple zeroth law says that if a and b it doesn't exactly say that but it implies this.

它很简单，第零定律指出如果a和,这不是第零定律的原话,但其意义是这样的。

麻省理工公开课 - 热力学与动力学课程节选

If we take this simple straightforward view and say you're dead when you're not P-functioning anymore, then you were dead,on and off and on and off,last night.

如果我们就用那直接简单的观点,说你就是死了，不再有人格功能了，昨晚你就不断地死亡和复活中度过。

耶鲁公开课 - 死亡课程节选

You'll see enough things that will confound you, but right now I want to demonstrate a simple paradigm of what it means to know the present and what it means to say this is what the future behavior will be.

你将会发现很多物理问题会让你困扰,而眼下我会举一个例子来阐述,什么叫了解现在,什么又叫预测未来

耶鲁公开课 - 基础物理课程节选

A simple example is, say, let's look at carbon.

一个很简单的例子是碳。

麻省理工公开课 - 固态化学导论课程节选