sample selection and respondent characteristics
报告 工厂经理 Report to Plant Manager 样本的选取及答辩人特征 Sample Selection and Respondent Characteristics 植树节快要来到了 Arbor Day is going to come to the ..
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sample selection and respondent characteristics
样本选择和被调查者特征
以上为机器翻译结果，长、整句建议使用 人工翻译 。