cohorts

基本解释

But those figures may change as the approach becomes more common and new cohorts of offenders affect the statistics.
但是，当途径更加普通，罪犯新的大军会影响统计，那些数据就可能发生变化。
There is always a possibility that variations are the result not of changes during the life-course, but of differences between cohorts.
总有一种可能是这些区别不是由于生命历程的变化而是由于同一年龄层次的人之间的差异。
ecocn.org
Their prodigious efforts, their resistance to distraction, would yield new cohorts of sandhill cranes, extending and rejuvenating the species.
它们的惊人努力，它们抗拒分心的努力将产生新的沙丘鹤军团，将发展更新这个物种的活力。

Another more of interaction that you get in the MAPP program is with cohorts.
宾州应用心理学硕士课程的,另一种交流形式是团体交流。
哈佛公开课 - 幸福课课程节选
So you take at least one, sometimes more classes with your cohorts.
所以至少和班级一起修一门课，有时候更多。
跟校友们的关系 - SpeakingMax英语口语达人
Well, definitely, in graduate school, because we are in cohorts,
嗯，当然，研究生院呢，因为我们我们是按组来进行学习的，
大学也在这里 - SpeakingMax英语口语达人

Simply put, early cohorts contained few working women who could age out of the workforce.
FORBES: Japan, Demographics and National Productivity