And by the way note that here becomes I'm using double quotes, I can easily use a single quote as an apostrophe, okay?

顺便说一下，这里变成了我使用双引号，我可以很容易地使用单引号作为撇号，好吗？

Whereas if we do this with a simple quote, we are just getting the $foo as it is and single quotes won't be replacing.

然而，如果我们使用简单的引号来执行此操作，我们只是按原样获取 $foo 并且单引号不会被替换。

And since we're using double quotes instead of single quotes that thing will be expanded and it will tell us that we are in this working folder.

由于我们使用双引号而不是单引号，因此该内容将被扩展，并且它会告诉我们我们位于此工作文件夹中。

There are two ways that you can define a string: You can define strings using double quotes and you can define strings using single, sorry, using single quotes.

定义字符串有两种方法：可以使用双引号定义字符串，也可以使用单引号定义字符串，抱歉，使用单引号。

Now we add three quotes, so 1, 2, 3, there you go, So, we have three quotes to start our string and three to terminate it. Again these quotes can be single or double quotes.

现在我们添加三个引号，所以1,2,3，你去了，所以，我们有三个引号来启动我们的字符串和三个终止它。同样，这些引号可以是单引号或双引号。

So I'm going to use single quotes and set the course name to Python for Beginners. Now here we're going to use square brackets to get a character and a given index in this string.

所以我将使用单引号并将课程名称设置为Python对于初学者。现在我们将使用square用于获取此字符串中的字符和给定索引的括号。