GbEng
我八点钟就到医院了,但是九点钟我才去值班。 I arrive at the hospital at eight o'clock, but I don't go on duty until nine.
按照规定,任何时候均需有人值班。 The rule is that someone must be on duty at all times.
在午饭时间, 值班教师负责维持校内秩序. The teachers on duty are policing the school buildings during the lunch hour.
我上星期天打电话到你办公室去, 但他们说你不值班。 I called your office last Sunday but they said you were off duty.