It could have been a law firm; it could have been working in the study group on a homework assignment.
它可能是一家律师事务所;它可能是学习小组做家庭作业。
The study group discussed the problem again and again, and they finally worked it out.
学习小组反复讨论这个问题,最后他们终于解决了。
Thanks to my classmate-Carl, he advised me to join a study group. There were twelve members in it.
感谢我的同学卡尔,他建议我参加一个学习小组。一共有十二名成员。
The University of Nottingham study examined whether the possibility of punishing free-riders leads to better group results.
VOA: special.2009.03.03
The second case study of moral feeling is "in-group" and "out-group."
第二个道德情感的案例分析,是“内群体”与“外群体”
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
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