您要查找的是不是：
- There are three guards on duty at the door of the bank. 银行门口有3个站岗的警卫。
- There were over 100 police on duty at the demonstration. 游行期间有100多名警察值勤。
- There were over1 00 police on duty at the demonstration. 游行期间有100多名警察值勤.
- The switchboard operator is on duty from6to9. 电话总机接线员六点至九点值班。
- 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。
- on duty at the switchboard 在电话交换台值班
- There are three guards on duty at the door of the bank or three bank guards are on duty. 银行门口有3个站岗的警卫。
- You can't rely on seeing the same doctor at each visit. It all depends on which of them is on duty at the time. 你不能指望每次来都看同一位医生，这得看当时哪一位医生值班。
- Italian Football Federation (FIGC) president Giancarlo Abete defended the policemen on duty at the ground. 意大利足协主席GiancarloAbete位警察的行为辩护。
- The next crew relief comes on duty at 9 o'clock. 下一批换班的员工9点钟接班。
- The switchboard operator is on duty from 6 to 9 . 电话总机接线员六点至九点值班。
- The switchboard operator is on duty from 6 to 9. 电话总机接线员六点至九点值班。
- I arrive at the hospital at eight o'clock, but I don't go on duty until nine. 我八点钟就到医院了，但是九点钟我才去值班。
- I was on picket duty at the time. 当时我正执行罢工的纠察任务。
- Physicians, nurses, hospital administrators, and staff on duty at the hospitals during the evacuation responded to a 58-item structured questionnaire. 疏散期间的医师，护士，医院管理人员以及医院值班人员都完成了一份58项的调查问卷。
- Hundreds of police will be on duty at the ancient site, while helicopters, metal detectors and sniffer dogs will help the level of security. 数百名警察将在古奥运会遗址严阵以待；直升飞机、金属探测器和警犬也将被用来加强圣火点燃仪式的安全保卫工作。
- Testing at Jerez continued on July 25th and eight drivers were on duty at the Spanish track, again in hot and sunny conditions. 7月26日众车队在赫雷兹的测试继续进行，8名车手依旧在炎热以及阳光很足的的环境下在西班牙的赛道上继续工作。
- Who will be on duty at six o'clock? ---I will. 6点钟谁值班?-我值班。
- Some nurses at the hospital are on duty all night. 这个医院的一些护士整夜值班。
- We'll take our turn on duty at 1 p.m. 我们下午一点接班。
