Well, a cross-sectional study would mean that you'd get a random group of the population and measure them in 1970 and then take another random group five years later and measure them, but it wouldn't be the same people necessarily, it would be different groups of people.

那么,横断面研究就是,1970年你在人群中随意选择一组人,并记录下相关数据,然后,五年后再随意选择一组人记录数据,但这不需要是同一组人,通常是不同的人

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But you have to submerge yourself in those groups, and I don't speak it enough,

但你必须把自己沉浸于这些小组里，我说得不够多。

学习外语的时候 - SpeakingMax英语口语达人

One of the things that we've done over the years has been open-minded about backing groups that don't have traditional investment credentials.

多年来我们一直做的一件事情,就是开放思维去支持那些,传统投资者不会涉足的领域

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The model doesn't take into account differences between the groups in voter turnout, based on the candidates.

这个模型没有考虑到,不同候选人所在党派的,名额数有差异

耶鲁公开课 - 博弈论课程节选

I said because I knew I didn't want to have five kindergarten groups all in here.

因为我不想,5组幼儿园小朋友,都同时参加。

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What's more interesting is below even that there may be unconscious associations that work that people don't actually know about but affects their thoughts about race, gender and other social groups.

更有趣的是第三层,刻板印象还会在潜意识在起作用,人们根本意识不到这点,但它现样会影响人们关于种族，性别和其他社会群体的看法。

耶鲁公开课 - 心理学导论课程节选