change off at doing sth.

• 轮流做某事

change off at doing sth.的用法和样例：

例句

1. We took turns doing the housework each week.
   每星期我们轮流做家务。
2. One of her favorite pastimes is to take digital pics of herself doing various pouting poses.
   她的喜爱消遣之一是轮流做各种不同的噘嘴姿势的数传她自己的照片。