As soon as you call open on your request object, this property is set to 1.

一旦对请求对象调用open之后，这个属性就被设置为1。

youdao

This skips out the intermediary step of obtaining a ServiceReference, but does require that you call open after construction, in order to begin tracking services.

这就跳过了中间获得ServiceReference的几步，但是要求你在构造之后调用open，以便开始跟踪服务。

youdao

youdao

You open what we call the "text editor," the specific one we used on Wednesday was called Nano, -- which is similar to Notepad or TextEdit -- totally simple, kind of dumbed down but in a useful way so that you can just focus on writing code and not learning some new interface.

你先打开那个“文本编辑器“,就是我们周三用过的叫做Nano的编辑器，这个跟写字板和记事本差不多-,非常简单的，只是通过一种有用的方法而进行精简了的,所以你们可以把注意力集中在编写代码上,而不需要学习一些新的界面操作。

哈佛公开课 - 计算机科学课程节选

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