Here, in the first part of the poem, Yeats talks about death and remorse as the end of all debate, the last word.

在这首诗的第一部分，叶芝,谈及悔恨和死亡是所有争论的结果。

耶鲁公开课 - 现代诗歌课程节选

I once counted the number of times he used the word the letter--O--in that poem, and I quit counting.

我曾经数过他到底在诗里用了多少个"啊",最后我放弃了

耶鲁公开课 - 美国内战与重建课程节选