at recess

例句：

1. 1. During the break, students are free to do anything they want.
   课间休息时，学生们可以自由做任何事。
2. 2.He took a short break before starting his presentation.
   他在开始演讲前休息了一会儿。
3. 3.The teacher asked everyone to take a break before the next class.
   老师要求大家在下一节课开始前休息一下。