I'm going to read parts of them to you, and together I think they give you the sort of snapshot I want you to have of where literature stands, where reading stands, at the middle of the twentieth century.

我要读一部分给大家听，这些可以给大家,一个关于二十世纪中期，文学和阅读的立足点是什么的简单印象。

耶鲁公开课 - 1945年后的美国小说课程节选

So it's very interesting to see that little snapshot.

这张快照颇有趣味。

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It's a more powerful method than something called a cross-sectional study, and I'll come back in a later lecture and talk about these in more detail, but a cross-sectional study means you're taking a snapshot of a population of people at one time.

这种方法比所谓的横断面研究更加有效,我将在以后的课中,再仔细讨论这个问题,但横断面研究是指,你一次记录下一群人的状况

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选