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

I think engineers have a role to play in that, but it's not sort of classical Biomedical Engineering in the way that developing an artificial heart is where you can see that.

我认为工程师们,在其中扮演了重要角色,但它又不像传统生物医学工程那样,去研究人造心脏之类,实实在在的东西

耶鲁公开课 - 生物医学工程探索课程节选

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

So psychology is a big player here.

因此心理学在此扮演了重要角色

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选