五人组是在哪里开始改变他们人生的科学研究的?
Where did the FIve embark upon their life-altering scientific explorations?
迈克尔和他兄弟组成的“杰克逊五人组(Jackson 5)”是历史上最成功的家庭组合之一。
Michael Jackson's group with his brothers, the Jackson 5, was one of the most successful family ACTS of all time.
每周五个上午里,老师们会与25人一组的学生见面,就从家庭作业问题到周六晚上糟糕的约会等各种问题展开开放式讨论。
Teachers meet with students in groups of 25, five mornings a week, for open-ended discussions of everything from homework problems to bad Saturday-night dates.
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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