您要查找的是不是：
- They were taking turns to be on the night shift. 他们轮流做夜班。
- They are taking turns to be on the night shift. 他们轮流做夜班。
- The nurses and doctors take turns to be on night duty. 护士和医生轮流值夜班。
- The night shift has to be doubly vigilant. 值夜班要加倍警惕。
- I've got to be on the run all through the shift. 上班时间我忙个不停。
- He and his wife seem to be on the outs these days. 他和他的妻子最近似乎感情很不好。
- The couple seemed to be on cloud nine. 那对夫妇看上去极其幸福。
- That newscaster is a showboat, she wants to be on camera all the time. 那新闻播报员是一个爱现的人，她随时想上镜头。
- The police warned people to be on the watch for intruders. 警方预先通知大家防备有外人闯入。
- Doctors are expected to be on call day and night. 医生日夜准备应诊看病。
- The citizens were warned to be on guard against a sudden night attack. 市民们得到通知，要提防夜间的突然袭击。
- You'll have to look sharp if you want to be on time. 如果你想准时的话,就得赶快。
- The number of burglaries in the area seems to be on the increase. 这一地区的入室盗窃案件似有增无已。
- We are glad to be on land again. 我们很高兴又踏上陆地了。
- The workers want to be on an equal footing with the managers. 工人要求与经理地位平等。
- I thought Bill intended to be on the grab. 我认为比尔是想伺机捞一把。
- In some of these guessing games you need to be on your toes all the time. 在有些猜谜游戏中，你必须始终积极开动脑筋。
- Miami is the perfect place to be on holiday. 迈阿密是个度假的理想的地方。
- Imagine yourself to be on a desert island. 设想一下你身处荒岛的情形。
- You'll have to be nippy if you want to be on time. 如果你想准时到达，就得赶快些。
