Now the word theory has a very complicated etymological history that I won't trouble you with.

理论这个词的词源非常复杂,你们不需要了解。

耶鲁公开课 - 文学理论导论课程节选

Instead he develops a highly intricate theory of how he's going to use slavery to save black people.

但他发明了一套非常复杂的理论,是关于如果通过奴隶制解放黑奴的

耶鲁公开课 - 美国内战与重建课程节选

He says, "Boy, this is complicated theory.

他说，哦，这是一个复杂的理论。

耶鲁公开课 - 文学理论导论课程节选