And that's fine, because inside of curly braces can you redeclare variables with the same name if you intend to quote unquote shadow the previous variable.

那是可以的，因为,在花括号里面，你可以重新定义一个,相同名字的变量,如果你想引用之前的变量。

哈佛公开课 - 计算机科学课程节选

Computing square root. I'm going to capture it in a piece of code, I'm going to be able to refer to it by a name, and I'm going to suppress the details, meaning inside of that computation, you don't need to know what it does. You just need to know, if I give it the right kind of input, it'll give me back an input that satisfies the contract that I set up.

比如计算平方根,我会用一段代码来说明,我将给它命名,并且忽略细节,意思就是在这一段计算过程中,你不用知道它做了什么，你只需知道，如果我进行了正确的输入,它将会给我符合条件的输出。

麻省理工公开课 - 计算机科学及编程导论课程节选

Now at this point in the story, I have a variable called name, stored inside of that is the string, literally David.

再回到这里，我有一个名为name的变量，而且把字符串David赋给了name变量。

哈佛公开课 - 计算机科学课程节选

It's being handed a picture that looks like this, and inside each baz of these squares is a word foo and bar and baz as well as the program's name.

它传递一个像这样的图画，在每个,长方形中是一个单词foo和bar和,还有程序的名字。

哈佛公开课 - 计算机科学课程节选