turn and turn about

• vi. 轮流(时而 ... 时而 ... )

turn and turn about的用法和样例：

例句

用作不及物动词 (vi.)

1. Father and son took spells at the wheel.
   父子轮流开车。
2. The students clean the classroom everyday in turn.
   学生们每天轮流打扫教室。