inattentive

I was disappointed by the food and the inattentive service.

我对食物和漫不经心服务很失望。

An inattentive pupil is unnecessarily an unclever boy or a girl.

不专心学生不一定就是一个不聪明孩子。

If the operator is either inattentive or napping, the alertor sounds an alarm.

如操作人员精神不集中或打盹儿，本装置就会发声报警。

A device to watch the operator who watches the machine.If the operator is either inattentive or napping, the alertor sounds an alarm.

一种对监视机器工作情况操作人员进行监视装置。如操作人员精神不集中或打盹儿，本装置就会发声报警。