Maybe it could refer to either the poet or the sun throughout the entire line, if you think of the mantle blue as being the actual sky that the sun is able to twitch over his shoulder.

或者两者皆可,从整句的行文看来，如果你们把蓝色的丝巾看作是真实的天空的话,那么太阳的确是能够在他的肩上轻轻颤动。

耶鲁公开课 - 弥尔顿课程节选

people just can't be happy if they are living a life that is contrary to the type of person they are.

如果人们的生活与他们真实的自我背道而驰，那么他们是不会开心的。

喜欢的书 - SpeakingMax英语口语达人

- So what are these truths? We'll begin to answer this question--begin to answer this question, you'll spend the rest of your life finishing the process of answering this question. But we'll begin by identifying some, by no means all, of the major themes of Genesis 12 through 50.

那么这些真实是什么？我们将开始回答这个问题,开始回答这个问题，你们将用余生的时间来完成,这个问题的解答过程，但我们将开始辨明一部分的,不可能是全部的，《创世纪》十二至五十章的主要主题。

耶鲁公开课 - 旧约导论课程节选