运动损伤发生的时间主要是课外活动和体育课，分别占61.3%和29.8%。

The main causes were extracurricular activities (61.3%) or at physical education class (29.8%).

youdao

运动损伤发生的时间主要是课外活动和体育课，分别占61.3%和29.8%。

The main causes were extracurricular activities (61.3%) or at physical education class (29.8%).

youdao