五百名受试者可能听起来很多,可是一旦你按年龄、是否接受疫苗以及哪年接受疫苗将他们分类,你的总人数就变得更小。
Five hundred subjects may sound like a lot, but once you start stratifying them by age, by whether they received all of their shots, or which year they were immunized, your total number gets smaller.
连接建筑物所产生的空间被用作庭院和按不同年龄段分类的花园。
The space that is produced by connecting the buildings is used as patio and the garden classified by age.
世卫组织这份按性别年龄详细分类调查的新报告的结论并没有多少让人吃惊的内容。
WHO the detailed breakdown of age by gender to investigate the new report's conclusions are not surprised by the number of people.
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