It's a provisional ending. It's not a rhyme word, and so it doesn't constitute the end of a unit of sense as a rhyme word would in most heroic couplets.

它不是真的结尾，不是韵脚，因此它不像大部分英雄双韵体中的韵脚词一样,标志着一个意思表达的完结。

耶鲁公开课 - 弥尔顿课程节选

It's by no means clear that The Rhyme of the Ancient Mariner will end with "Love all things, great and small things."

大家不可能清楚的预见到《古航海家之歌》,会以“爱所有事物，不管它伟大或渺小“结尾“

耶鲁公开课 - 文学理论导论课程节选

The appearance of this semi-epic rhyme scheme here at the end of Milton's poem suggests his readiness, and he's ready only here at the end of Lycidas to embark on the epic project.

弥尔顿诗篇的最后处半史诗韵律的设计,显示了他已准备就绪，他在的结尾处依然准备好了,在史诗的创作上留下自己的印迹。

耶鲁公开课 - 弥尔顿课程节选

And so in Milton's verse here, sense or meaning is variously drawn out from one verse into another. Sense, the very spirit of meaning, is infused throughout an entire line rather than being singled out and separated or segregated to the end of the line in the form of the rhyme word.

弥尔顿的诗句里，感觉或意思在句与句,之间传递，感觉，意思的灵魂,贯穿于整句，而不是被分离出来,以韵脚词的形式放在句末。

耶鲁公开课 - 弥尔顿课程节选