相反，编写一个函数，当调用它时，返回生成器。

Instead, one writes a function that, when called, returns a generator.

youdao

接下来，编写一个函数显示blog中的这些post。

Next, write a function to display the posts in the blog.

youdao

在Vim中编写一个函数，它把文件源代码传递给Perl代码。

You define a function in Vim that passes to the Perl code the file sources.

youdao

Well, for a thing called main which itself is a function but a function I wrote, a tool I am writing at the moment not like printf which someone else wrote long ago, I have to say where does main start, where does main end, and I do that by using these curly braces.

至于这个名曰main的函数,由我们自己写的函数，也是一个工具,只不过由我们自己编写，而不是像printf那样已经由前人写好了,我们必须要说明main在哪开始，在哪结束，这样我们就要用到大括号了。

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