SOA关心的是企业架构，使用服务作为定义概念。

SOA is about the architecture of the enterprise, using services as a defining concept.

youdao

这是特定领域的模型，定义概念并提供用于创建该领域中的模型的构建元素。

It is the model of a specific domain, and it defines concepts and provides building elements to create models in that domain.

youdao

在概念模式后出现的是逻辑模式——用更多的细节定义概念，并显示实体之间的关系的数据模型。

After the conceptual schema comes the logical schema — the data model that defines the concepts with greater detail and shows the relationships between the entities.

youdao

And this is because I don't have something I would really like to have, which is data hiding.

也就是数据隐藏,你们会看到关于,这个概念的很多定义，我认为数据隐藏。

麻省理工公开课 - 计算机科学及编程导论课程节选

That's a fairly common-sense idea, but it's important to define it, and I call that the common-sense law.

十分常识性的概念，但定义它非常重要，所以我叫它“常识定律“

麻省理工公开课 - 热力学与动力学课程节选

We can define it in a couple of different ways depending on whether we're talking about sample mean or population mean.

我们有几种不同的方式去定义这个概念,取决于我们指的是,样本均值还是总体均值

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