翻译：40 percent of the students consider exercise a waste of time and exhausted. Because of the excitment after doing sports, they can't pay attention to reviewing for a long time,and they may even get injured in the process.
用英语翻译40%学生认为段落浪费时间,使人疲劳,运动后很兴奋,较长时间不能复习功课,运动中可能受伤