moon /muːn/► SEE ALLbe over the mooncry/ask for the moononce in a blue moonpromise (sb) the moon/earth/world ●be over the ˈmoon (informal, especially BrE) be very happy and excited非常高兴；乐翻了天◆‘How does it feel to have won the championship?’ ‘I’m over the moon.’ “获得冠军的感觉如何？”“我太开心了。”ORIGINThis comes from a line in an old children’s poem: Hey diddle, diddle, the cat and the fiddle, the cow jumped over the moon….这个习语源于一首旧童谣，其中有一句是“嘿，迪得尔，迪得尔，猫儿和提琴，奶牛跳过了月亮…”。●cry/ask for the ˈmoon ( want the ˈmoon) (BrE, informal) want or ask for sth you cannot get, or sth that will not be given to you想做办不到的事；想要得不到的东西◆Is it asking for the moon to hope for peace in this country? 想要在这个国家实现和平是异想天开吗？◆I don’t want the moon; I just want him to listen to me for once. 我的要求并不过分，我只想他能认真地听一次我的话。●ˌonce in a blue ˈmoon (informal) very rarely千载难逢；极难得；破天荒地◆Sue’s daughter only visits her once in a blue moon.苏的女儿很少来看她。●promise (sb) the ˈmoon/ˈearth/ˈworld (informal) make very big or impossible promises that you are unlikely to keep作出不可能兑现的承诺◆He promised her the moon, but after ten years of marriage they hardly had enough to live on.他向她作了许多空头承诺，可是结婚十年了，他们几乎入不敷出。