What is Socrates trying to do here, and what is that metaphor, ? that central metaphor, ? what function does it serve within the work?

苏格拉底倒底想干吗，那个隐喻，那个核心隐喻是啥，它在本书中有啥功用？

耶鲁公开课 - 政治哲学导论课程节选

But, in terms of the basic theory, that's the core concept.

但在基本原理上来说,它是核心概念

耶鲁公开课 - 金融市场课程节选

A Christian civilization was deeply at the root of this cluster of ideas we call Manifest Destiny, as was a virulent kind of nationalism that boomed after the War of 1812 and through the 1820s into the 1830s.

基督教文明是我们所称的命运天定,及其相关思想的核心,它是一种有害的民族主义,在1812年战争后兴起,并流行于十九世纪二十年代和三十年代

耶鲁公开课 - 美国内战与重建课程节选