classmate relation

Physical exercise has direct impact on middle school students' optimism. It can impose indirect influence by the two intermediary variants of self-efficiency and classmate relation.

体育锻炼对中学生乐观有直接效应，而且体育锻炼可以通过自我效能和同学关系这两个中介变量对其产生间接的效应。

They are most inclined to classmate relation harmony, a bosom friend in the side can at any time to provide warmth and support is happy.

他们最倾向于同学关系的和睦，有知心朋友在身边能随时提供温暖和支持则感到幸福。

Girls score higher than the boys notably in interpersonal relationships, interpersonal association, classmate relation, classmate communication, and classmate associate.

女生在人际关系以及人际相处、同学关系、同学交往、同学相处4个分因子上的得分显著高于男生。