I see this as a course that's an introduction to the literature of a period, to modern poetry.

我觉得，这只是一门引导性课程,引导大家关注某一时期的文学创作和现代诗歌。

耶鲁公开课 - 现代诗歌课程节选

About one-third of Southern white families at one time or another had at least a toehold in slave ownership.

大约三分之一的南方白人家庭,在某一段时期至少都拥有过奴隶

耶鲁公开课 - 美国内战与重建课程节选

Sparta starts at an early point, sends out a colony to southern Italy at some time, probably early, they sent out a colony to an island in the Aegean Sea, Melos, and then they stopped and never sent out another colony.

斯巴达要早一些,某一时期在意大利南部建设过殖民地,也许更早的时候,曾在爱琴海上的岛屿米洛斯殖民,然后他们的殖民活动戛然而止,并从未再开始

耶鲁公开课 - 古希腊历史简介课程节选