By "difficult," it is meant, I think, well, first of all that it is in some sense set apart from common speech, as a specialized and highly self-conscious use of language.

艰深“的意思，我认为，首先，某种程度上它是和平时谈话有所不同的，专业性极强，对语言运用自知也很高。

耶鲁公开课 - 现代诗歌课程节选

His in other words seems to be a highly personal in many ways highly individual quest for self perfection and not a doctrine about the value of freedom of speech in general.

换言之，他崇高的个人,从许多层面来看，是他崇高的个人,追求本身完美，而非关一般,言论自由价值的学说。

耶鲁公开课 - 政治哲学导论课程节选

But I want to start with what is one of the grand themes of the Republic, it is indicated in Book II by Adeimantus' speech about self-control.

但我想从《理想国》中的,一个重要主题开场，在第，II，册,由，Adeimantus，关于自控的谈话中所引出。

耶鲁公开课 - 政治哲学导论课程节选