If you want to make sure both conditions are true and they both have to be true for any code to be executed, use ampersand ampersand.

如果你想保证两个条件都成立,或者它们两个都必须为真值，才能执行一些代码，那就使用“&&“

哈佛公开课 - 计算机科学课程节选

And inside of the machine, and things we'll talk about, there is a process that will allow that sequence to be executed as described in that recipe, so it can behave like any thing that I can describe in one of those recipes.

在机器里面，还有我们要说的，里面有一个我们允许的,在方法中描述的,将要被执行的序列的过程，因此它可以像我在方法之中,描述的任意一种那样来表现。

麻省理工公开课 - 计算机科学及编程导论课程节选

This is code that's got to be executed before anything else happens.

这个代码是,在所有事情发生之前执行的。

哈佛公开课 - 计算机科学课程节选

It's a way to tell the performer how this music is to be executed.

告诉演奏者,该怎么样去演奏这段音乐

耶鲁公开课 - 聆听音乐课程节选