您要查找的是不是：
- 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。
- She put the saddle on the horse' s back. 她把马鞍放在马背上。
- He is binding a burden on the camel 's back. 他在将重物往骆驼的背上捆绑。
- I have to vent my spleen on someone. 我非得找个人出出气。
- 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。
- I hope you'll be on the level with me. 我希望你对我坦率布公。
- The big fish will be on the take in the water. 大鱼在水中会伺机捕捉小鱼。
- The couple seemed to be on cloud nine. 那对夫妇看上去极其幸福。
- The hostilities will be on eruption. 战事即将爆发。
- I must try my cooking out on someone; will you be my guinea pig? 我必须让人尝尝我做的菜，你愿意做我的试味者吗?
- They literally let it run off like water on a duck 's back. 他们几乎把这当成是耳旁风。
- He always fawns on someone to face and then stabs him in the back. 他会当面吹捧一个人，背后又说他坏话。
- These pictures will be on show next week. 下周将公开展出这些画。
- The news will be on the air tonight. 这个新闻今晚将要广播。
- A hex is believed to be an evil spell that is put on someone. 背运据说是指被人用咒语镇住了。
- Ursula caught the Arab’s back collar. 她立即全力追赶阿拉伯人。
- Be on your guard, I conjure you. 千万要警惕呀，我恳求你。
- 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。
- I must try my cooking out on someone;will you be my guinea pig? 我必须让人尝尝我做的菜，你愿意做我的试味者吗?
- When I get frustrated and angry, I have to vent my spleen on someone. 我受尽挫折，怒火冲天时，禁不住想找谁发一顿脾气。
