In addition to these arrangements, extra ambulances will be on duty until midnight.

除了这些安排以外，另增救护车值班至午夜。

《牛津词典》

Shouldn't you be on duty in Room Four?

你不是应该在4号房值班吗？

youdao

Amanda: Really? Well, I will be on duty next Monday.

阿曼达：真的吗？那，我下周就去报到。

youdao

It will house 8,000 people in tents. Fifty security guards will be on duty around the clock.

VOA: standard.2010.03.29

they can be found to have breached their fiduciary duty, I'm on the hedge fund side and against the sort of company management side.

他们可以被发现存在渎职行为，我站在对冲基金的阵营上并且反对,公司管理的主张。

耶鲁公开课 - 金融市场课程节选

So the I.O.M.proposed that residents be required to get five continuous hours of rest for every sixteen hours on duty.

VOA: special.2009.06.02

Extra call center representatives will be on duty to handle an expected increase in queries from customers.

CNN: Y2K teams: 'We're ready'

Northumbria Police say extra officers will be on duty and have urged fans to vent their frustration peacefully.

BBC: Keegan & Ashley in surprise talks

About 25 extra GPs have been hired by the CCGs, allowing two to be on duty at any one time.

BBC: Shropshire GPs to support 999 calls