And this is not the sort of thing that we're going to come back and quiz you on, so don't worry about the details here, but it's interesting how the field defines different terms.

这不是考试内容,不是为了以后考你们,所以不要担心其中的细节,这个领域的定义是很有趣的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

I'm worried about the math quiz on Monday.

我很担心周一的数学考试。

I'm worried 实战 - SpeakingMax英语口语达人