值班英语怎么说

值班英语怎么说？值班可以用英语说成"on duty"，来源于拉丁语"officium"，意为职责或义务。例句：

I'm on duty tonight, so I can't go out with you. 我今晚值班，所以不能和你一起出去。
The nurse is on duty 24 hours a day. 护士每天24小时值班。
The security guard is on duty from 8pm to 8am. 保安人员从晚上8点到早上8点值班。