Before I do that though, let me try and give you an analogy to keep this in mind of why we want to basically build these abstractions and what we need in order to have them work together.

在我们看例子之前请让我打个比方,以便你们能记住我们,为什么要建立这些抽象,以及要使它们协调工作,我们需要做些什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

And we're going to use this object-oriented programming, typically to create something called data abstractions.

在接下来的几天,你会明白我们这里说的具体含义,它的一个同义词。

麻省理工公开课 - 计算机科学及编程导论课程节选

So the sort of religious part of today's class is models are always abstractions.

今天这一讲我要说明的是,模型总是抽象的

耶鲁公开课 - 博弈论课程节选

Love and loyalty are mere abstractions, however, without some sort of vehicle for their expression; and the vehicle for their expression then is God's Torah, the sum total of God's teachings and instructions and laws and guidelines, which are supposed to ensure long life and prosperity in the land.

爱和忠诚都是一种无法表述的吸引力,于是律法卷就成了表述它们的方式,即对上帝的教诲，指导，律法和方针的,汇总，它将保证这片土地长久的,繁荣。

耶鲁公开课 - 旧约导论课程节选