现在，我们生产协议：指令的集合。

Now, we make protocols: sets of instructions.

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这个指令的集合可能非常简单，也可能十分复杂。

It may be a very simple or complicated set of instructions.

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简而言之， 软件包就是一个文件及文件处理指令的集合。

To put it very simply, a package is a collection of files with instructions on what to do with them.

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And that does two things: bug one, it helps catch bugs in your code, and secondly it often converts it into a more efficient sequence of instructions before you actually go off and run it. All right?

这有两点好处：,第一是可以帮助你发现程序中的，第二是把你的代码,在运行之前,转换为更有效率的指令的集合，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选