它定义了 JDBC 驱动程序类。

This defines the JDBC driver class.

youdao

它定义消息交换，以便操作订阅资源。

It defines message exchanges to manipulate subscription resources.

youdao

它定义了服务的结构和行为。

It defines the structure and behavior of a service.

youdao

This combining of data and functions on that data is a very essence of object-oriented programming That's really what defines it.

数据与函数的结合,是面向对象编程的核心,这也就是它的定义。

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

When I call this class definition, it calls init, init and I give it an x and a y value.

我说过，当我们，调用这个类的定义的时候，它会去调用。

麻省理工公开课 - 计算机科学及编程导论课程节选