She and her husband already limit their children to one extracurricular activity at a time to keep them from exhaustion.

她和她的丈夫已经开始限制孩子一次只能参加一项课外活动，以免他们精疲力尽。

youdao

If a kid is making good grades and is in some extracurricular activity or working part-time, and they're nice to their parents, you've won the game.

假如你的孩子学习成绩良好，有参加课外活动或是兼职，并且对父母也比较友善，那你就成功了。

youdao

By the time I got to college I was double majoring, going to summer school and devoting myself to every kind of extracurricular activity I could find.

打从我来到大学我加倍努力并上暑期班学习，致力于我能找到的各种课外活动。

youdao