This is actually a piece of code that is really easy to think about recursively and is much more difficult to think about in other ways.
这确实是一段用递归思考起来非常容易,而其它方法特别麻烦的代码,这一段代码的意思就是。
And I do that very precisely because it'll teach you a little bit about how easy or difficult it is to do it and what kind of information you retrieve from a dietary assessment.
我这样要求是因为,这能教给你,做评估的难易程度,以及你们能从饮食评估中得到何种信息
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