be on duty 上班
- It's your turn to be on duty tomorrow.
明天轮到你值日了. - The rule is that someone must be on duty at all times.
按照规定,任何时候均需有人值班。 - I'd love to come. But I have to be on duty this weekend night.
我是想过来,但我周末晚上得值班。
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