secondary data set group

例句：

1. 1. The team hasidentified the secondary data set group that willbe used for analysis.
   该团队已经确定了用于分析的次级数据集组。
2. 2. Theresearcher collected secondary data from various sourcesto build a comprehensive understanding of the issue.
   研究者从各种来源收集了次级数据，以全面了解这个问题。
3. 3. The primarygoal of this study is to identify thesecondary data set group that best fits theresearch question.
   本研究的主要目标是识别出最适合回答研究问题的次级数据集组。