Rails所提供的工具主要是一组代码生成器。

The tools that Rails provides are basically a set of code generators.

youdao

代码块就是将返回一个值的一组代码，如果没有返回值，那么会返回一个NULL对象。

A code block is simply a block of code that returns a value, and if no value is returned then a NULL object is returned.

youdao

在多道程序处理系统中，用于修饰或说明两个或多个并发程序可以使用的一组代码、数据、文件、页面、段等。

Pertaining to a unit of code, data, file, page, segment ETC. in a multiprogramming system is available to two or more concurrent programs.

youdao

So you know from algebra I can't actually solve this. There may be multiple solutions to this. What would I have to do to change my code? And the answer is fortunately not a lot.

我解不出来方程,可能会有多组答案,我需要怎样修改我的代码呢？,很幸运的,答案是不用修改很多。

麻省理工公开课 - 计算机科学及编程导论课程节选

First of all, two parameters. It's OK. All it says is, when I call this, I need to pass in two parameters for this to work. All right? Now, if I want to use that, I'm going to use a second piece of code here, called Barnyard. I'm going Barnyard to read in a couple of values, convert them into integers, and then I'm going to use solve to get a solution out.

注意我得到了什么,第一，两个参数,它的意思就是我调用这个函数，我得给它输入两个参数，明白了吗？,现在如果我要使用它我得用,这里的第二段代码，也叫,我将读入一组值，将它们转化为整型,然后我会用solve得到一个解决方案。

麻省理工公开课 - 计算机科学及编程导论课程节选