zone out 走神，发呆，开小差，分心

　　How can you zone out when your exam is tomorrow?

　　明天就要考试啦，你怎么还在发呆？

　　Stop zoning out! We still have a lot of studying to do.

　　别发呆啦，我们还有很多学习任务呢。

　　疯狂练习吧！