柯林斯词典stratify /ˈstrætɪˌfaɪ/ 1. V to form or be formed in layers or strata 成层; 使分层 返回 stratify剑桥词典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。 a stratified society 分层的社会 返回 stratify