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单词 stratify
释义 stratify
UK ['stræt.ɪ.faɪ] US ['stræ-] verb transitive
■to arrange the different parts of something in separate layers or groups 使分层;使成层;将…分组
The sample of people questioned was drawn from the university's student register and stratified by age and gender.调查问卷的抽样人群选自大学的学生名单,按年龄和性别分组。
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