in an absent way

例句：

1. 1.She was absent-minded when she left the meeting.
   她离开会议时心不在焉。
2. 2. He was absent-minded and forgot to bring his homework home.
   他心不在焉，忘了带作业回家。
3. 3. The teacher noticed that the student was absent-minded during the test.
   老师注意到学生在考试时心不在焉。