首先，我认为我们需要仔细考虑一个定义。

To start things off, I think what we need to do is consider a definition.

youdao

我将从我的前同事罗伯特·斯特恩伯格那里选择一个定义，他现在是塔夫茨大学的院长，但他在耶鲁大学任教近30年。

I'm going to pick a definition from a former colleague, Robert Sternberg, who is now the dean at Tufts University but was here on our faculty at Yale for nearly thirty years.

youdao

综合服务是一个定义服务的框架。

Intserv is a framework for defining services.

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And the bigger lesson from that is that entropy, unlike energy u or enthalpy H, we could define an absolutely number for it.

热力学第三定律的一个更重要的推论是,与内能和自由焓不同，我们可以给上定义一个绝对的数值。

麻省理工公开课 - 热力学与动力学课程节选

But remember that we need to multiply it by the volume here, the volume of some sphere we've defined.

但记住我们需要把它乘以体积，乘以一个我们定义的壳层的体积。

麻省理工公开课 - 化学原理课程节选

It's got this funky looking form, right, it says, I've got something that I'm going to call a class, got that key word class right here.

以及我们怎么来使用这些方法，因此我要回到类这个概念上来，让我们来建立第一个类吧,就在你们课堂手册的这儿，我会去定义一个类。

麻省理工公开课 - 计算机科学及编程导论课程节选