It has a goal, however, that's described in that last stanza.

但却有一个目标，这在最后一节里有描写。

耶鲁公开课 - 现代诗歌课程节选

We're about to start talking about the elements of the language, but to do that, we also need to separate out one last piece of distinction.

我们将会开始讨论,语言的元素，但是为了达到这个目标，我们还需要去做,最后的一个区分。

麻省理工公开课 - 计算机科学及编程导论课程节选