Because that pool may be average of 10 inches, but maybe it has places that are 20 feet deep, if it's a large pool.

由于该池平均10英寸深，或许它某些区域有20英尺深，如果它是一个大水池的话。

哈佛公开课 - 幸福课课程节选

This pool, twelve very large studies, if you put all the number of subjects in those studies together, it would come up to a million and a half people.

这项研究汇总了十二个大型研究,如果把所有研究的受测者数量加起来,将有一百五十万之多

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

What this is, is you take a group of studies on an issue, you pool them all together, and then you weight studies differently depending on factors like how large they were, how good their methods were, and then you come out with overall estimates about the impact of something, in this case the Mediterranean Diet, on health outcomes.

所谓荟萃分析就是将某一问题的一组研究,汇总起来,并根据某些因素,赋予这些研究不同的权重,如基于研究的大小,研究方法的好坏等,然后得出关于某事物的影响的总体评估,在地中海式饮食中就是指健康结果

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选