您要查找的是不是：
- The rule is that someone must be on duty at all times. 按照規定，任何時候均需有人值班。
- She put the saddle on the horse' s back. 她把馬鞍放在馬背上。
- He is binding a burden on the camel 's back. 他在將重物往駱駝的背上捆綁。
- I have to vent my spleen on someone. 我非得找個人出出氣。
- 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. 我希望你對我坦率布公。
- The big fish will be on the take in the water. 大魚在水中會伺機捕捉小魚。
- The couple seemed to be on cloud nine. 那對夫婦看上去極其幸福。
- The hostilities will be on eruption. 戰事即將爆發。
- I must try my cooking out on someone; will you be my guinea pig? 我必須讓人嘗嘗我做的菜，你願意做我的試味者嗎?
- They literally let it run off like water on a duck 's back. 他們幾乎把這當成是耳旁風。
- He always fawns on someone to face and then stabs him in the back. 他會當面吹捧一個人，背後又說他壞話。
- These pictures will be on show next week. 下周將公開展出這些畫。
- The news will be on the air tonight. 這個新聞今晚將要廣播。
- A hex is believed to be an evil spell that is put on someone. 背運據說是指被人用咒語鎮住了。
- Ursula caught the Arab』s back collar. 她立即全力追趕阿拉伯人。
- Be on your guard, I conjure you. 千萬要警惕呀，我懇求你。
- That newscaster is a showboat, she wants to be on camera all the time. 那新聞播報員是一個愛現的人，她隨時想上鏡頭。
- I must try my cooking out on someone;will you be my guinea pig? 我必須讓人嘗嘗我做的菜，你願意做我的試味者嗎?
- When I get frustrated and angry, I have to vent my spleen on someone. 我受盡挫折，怒火衝天時，禁不住想找誰發一頓脾氣。
