The difference with the do while loop, as the syntax kind of suggests, is that this construct is going to do something no matter what.

作为建议的语法，do，while循环的不同之处,是这个结构不管怎么样,它会做一些事情。

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That is basically saying, given some collection of data, I want to have again a looping mechanism, where now my process is, walk through this, the collection one element at a time. And for that, we have a particular construct, called a FOR loop.

现在我的过程就是,通过一个个访问这个集合中,的元素的方式，来遍历这个集合,为了达到这个目的，我们有一个特定的结构，成为FOR循环。

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