Market data and analytics are derived from primary and secondary research.

市场数据和分析均来自小学和中学的研究。

The advantages of secondary research are that it is relatively cheap and easily accessible.

中学的优势，它研究的是相对便宜和方便。

First and secondary research. I hope that you can address this concern immediately as I find it very disturbing.

第一手和间接的调查。我希望您能尽快处理这个问题，因为我感到十分困扰。

Primary research flushes out information obtained from secondary research regarding attitudes, opinions, and beliefs.

一手情报能够排除从二手情报获得信息的态度、观点和信念。

Paper "in primary and secondary research Xing school teachers based training" in July 2002 published in "Education" 2002 No. 7.

论文《中小学科研兴校中的教师校本培训》2002年7月发表于《教育研究》2002第7期。