Middle school students are champion time-wasters .

中学生是荒度时间者中的冠军。

It went on to advise that : " high school students should focus on school work . "

文章接着建议称：“中学生的任务是学习。”

He has been examining the effect of a program in maine through which all middle school students were given laptop computers .

他一直在研究缅因州一个项目的效果，在这个项目中把笔记本电脑分给所有的中学生。

Moreover , corporate business games designed for building brand awareness are starting to spawn siblings used for employee education or even targeted at high school students .

此外，为增强品牌认知度而设计的企业商业竞赛已经开始衍生出用于雇员教育、甚至针对中学生的同类产品。

But caution is advised : among high school students , working more than 20 hours a week during the school year can lead to academic and behavior problems .

但是一些警告需要被考虑：在中学生当中，在学习期间一周工作超过20个小时的很容易导致一些学习和行为问题。