Yeats is talking about an event that has brought forth destruction, destruction of the world before the Easter Uprising.

叶芝描绘了这样一个事件,它带来了毁灭，对复活节前世界的毁灭。

耶鲁公开课 - 现代诗歌课程节选

And in any event, our primary concern is with the program of the texts as they stand before us: is there a symbolism operating here?

无论如何，我们主要关心的，是摆在我们眼前的,这些计划大纲：存在象征主义吗？

耶鲁公开课 - 旧约导论课程节选

But before he can actually be made present at the actual event of the Nativity, he has to endure something painful and obviously momentous: "from out his secret Altar toucht with hallow'd fire."

但是要想真正能在,基督降生时出现，他不得不忍受一些痛苦，而且是巨大的痛苦：,“从神秘的祭坛外碰到圣火“

耶鲁公开课 - 弥尔顿课程节选