控制表用于保存用于收集、加载和分析数据的定义。

The control tables are used to save any definitions used to collect, load and analyze the data.

youdao

但它通常还包含了可显示文本或其它根据语言需要而变化的数据的定义。

But it also typically contains definitions of displayable text or other data that needs to vary by language.

youdao

从高层面上说，元数据指关于数据的信息，比如数据的定义、结构、来源等等。

At a high level, metadata refers to information about data, such as its definition, structure, source, etc.

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

What we're really doing, or I shouldn't say what we're really doing, a basic piece of what we're doing, when we talk about classes or objects, is we're doing something that Professor Guttag mentioned, we're defining an abstract data type.

或者我不应该，说我们真正要做的，当我谈到类或者对象的时候，我们在做的基本的东西，如Guttag教授提到的,就是定义一个抽象数据类型，那么这到底是什么意思呢？

麻省理工公开课 - 计算机科学及编程导论课程节选