缺席的

例句：

1. 1.The teacher was absent from the meeting.
   老师没有参加会议。
2. 2. He is absent from school today because of a sickness.
   他今天因病缺课。
3. 3.The absent-minded child forgot to bring his homework.
   这个心不在焉的孩子忘了带他的作业。