This book is the new fruit of social research on P. E. combining theory and practice and it will be an important reference for the research on sportsmen behaviors.

该研究是体育社会学科建设的新成果，是一本优秀的体育理论与实践有机结合的读本，更是难得的研究运动员行为的重要文献资料之一。

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E. g. some the multifunctional team member didn't know what's the five reference book ;

部分多功能小组成员不知道五大工具书内容；

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The project has also unveiled reference designs for a second generation machine, which will take the form of an e-book with twin touch screens.

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