I am not accountable to you for my work.

我没有义务要对你说明我的工情况。

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进行监视的装置。操精神不打盹儿，本装置就会发声报警。