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

如操人员精神不集中或打盹儿，本装置就会发声报警。

Philip's having a zizz.

菲利浦正打盹。

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

一种对监视机器工情况的操人员进行监视的装置。如操人员精神不集中或打盹儿，本装置就会发声报警。

Even naps are beneficial, according to a Harvard study in which subjects who took a 90-minute snooze after learning a task performed 50 percent better over a 24-hour period than the napless group.

根据哈佛大学的一项研究表明，即便是打个盹也会对记忆有帮助。受测者学习后打盹90分钟的人24时内要比那些没有打盹的人群表现更好。