It emerged from a unique history in which chance and accident often played a vital part.

它出现在这段独特的历史中,其中机遇和偶然性扮演了重要角色

耶鲁公开课 - 古希腊历史简介课程节选

There is the backdrop of class struggle which is understood as crucial.

阶级斗争作为历史背景,在其中扮演了极其重要的角色。

耶鲁公开课 - 文学理论导论课程节选

And here's where the unconscious comes in.

无意识在这里扮演了重要的角色。

耶鲁公开课 - 心理学导论课程节选