JB：小男孩

“Junior Boy”常被缩写为“JB”，这种简化形式便于快速书写和使用，广泛出现在各类社交场合、文件记录或昵称设定中。其对应的中文含义是“小男孩”，既可用于日常交流，也适用于正式文档的简称表达。

On this basis, the evaluation methods and standards on physical fitness development level of junior boy high jumpers in second division with back style are made.
在此基础上，制订了男子少年乙组背越式跳高运动员身体素质发展水平的评定方法和评定标准。
Construction of Strength Training Mode in Junior Boy(JB) All - rounders
对青少年男子全能运动员力量训练模式的构建
The junior high school students ' positive emotions and negative emotions has significant different levels of gender : the positive emotions of girls were significantly higher than that of male students, the boy negative emotions were significantly lower than girls. 4.
初中生的积极情绪和消极情绪具有显著的性别差异：女生的积极情绪水平显著高于男生，男生的消极情绪水平显著低于女生。
And junior high school students ' own can treat positive physical exercise, most tend to take part in physical exercise in sports clubs and generally be fond of ball games and community activities, but the boy to exercise time and times higher than girls ' obvious.
而初中生自身能对待积极的体育锻炼，多数倾向于在体育俱乐部参加体育锻炼且普遍喜好球类和团体性活动，但男生参加锻炼的时间和次数明显的高于女生。

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