So when we talk about a cohort study, this means taking a group of people and following them over time.

所以当我们提到定群研究,就意味着,有一群人参加实验并需一直追踪下去

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The source doesn't tell us that, and in fact there's really no archeological evidence of a group, a large group, entering the land of Canaan at this time.

资料来源并没有告诉我们，事实上，并没有考古学证据表明,有一个部族，大部族在那个时候进入迦南。

耶鲁公开课 - 旧约导论课程节选

A cohort study means you take the same group of people and follow them every five years for that period of time.

定群研究意味着你只有一组研究对象,然后在研究期间每五年进行一次记录数据

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 also, the students put in actually more time into the class and they outperformed the control group.

而且学生对课业,付出更多时间，成绩比对照组好。

哈佛公开课 - 幸福课课程节选

We'll make them the control group this time.

这次我们让他们作为控制小组。

耶鲁公开课 - 心理学导论课程节选

When you bring a group of your friends back to your house, you're expecting to have a good time, : and your grandparent is there and says, "Oh, it's so good to see a bunch of young people.

当你带着,一群朋友回家，想要狂欢一下，但你的祖父母在家并说，“噢！看到一群年轻人真好。

耶鲁公开课 - 政治哲学导论课程节选

Sure, for the first time this year, there's an outdoor group studying at the Hillel, the Jewish Center. I think it really was inspired by this outdoor spirituality series, which is wonderful.

好的，今年户外活动项目，第一次在Hillel的犹太中心，进行小组学习,这一系列户外灵性活动真的给了我们很多灵感，这是个非常棒的项目。

普林斯顿公开课 - 人性课程节选

Any time you see a c h 3, this means a methyl group.

一旦你看到一个，C，H，3，的组合，这就意味着一个甲基。

麻省理工公开课 - 化学原理课程节选

But also you'd think that if there was a group of people that really had been attending the calories it would be this group, because very few people who come in for weight loss are doing it for the first time, so almost everybody has been on lots of different dietary attempts and somewhere along the line they've been doing calories.

想一想,如果世界上还有一群人,真正关注卡路里的话,那就是肥胖人群,因为那些参加减肥项目的人中,很少有人是第一次参加,几乎人人都进行过多次不同的饮食控制,他们也尝试过计算卡路里减肥

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选