"Extracurricular activities" 是指课外活动。这个词来源于拉丁语 "extra-" 和 "curriculum"，意思是在课程之外的活动。
例句：
"I'm involved in several extracurricular activities, including the debate team and the school newspaper."（我参加了几项课外活动，包括辩论队和学校报纸。）
"John is so busy with his extracurricular activities, he hardly has any free time."（约翰因为课外活动太忙了，几乎没有空闲时间。）
"She's considering joining the extracurricular drama club next semester." (她正在考虑下学期加入课外戏剧俱乐部)