on duty片语

值班、当班、执勤

Two nurses are on duty in the ward tonight.

今晚病房有两名护士值班。

上班、在工作中

Staff are not allowed to use their phones while on duty.

员工上班期间不得使用手机。

值班的、当班的

The on-duty officer wrote down every detail of the call.

值班警员把这通电话的每个细节都记了下来。