extracurricular

1. ADJ Extracurricular activities are activities for students that are not part of their course. 课外的[正式] [ADJ n]

Each child had participated in extracurricular activities at school. 每个孩子都参加了学校的课外活动。

...extracurricular sports. ...课外体育活动。

2. ADJ Extracurricular activities are activities that someone does outside of their normal work. 工余的[非正式] [ADJ n]

The money he made from these extracurricular activities enabled him to pursue other ventures. 他在工作之外赚取的外块使他可以尝试新事物。