短语 to ask for the moon 直译是要天上的月亮，实际意思是说某人提出过分的要求，想要得不到的东西或是想做做不到的事儿。

　　【例句】

　　1. Bob's wife is always asking for the moon. He works hard 12hours a day for poor pay, but she still expects expensive holidays and clothes.

　　2. Don't ask for the moon, Mr Jones. Be reasonable, please.

　　请注意：短语 to promise the moon to someone 的意思是向某人答应办不到的事儿，也就是汉语里常说的空口许愿。

　　【例句】

　　My husband promised me the moon when we got married: a big mansion, a flashy car and all thediamonds I could wear. But none of it happened!

　　【今日小常识】

　　The Apollo missions between 1969 and 1972 returned over 380kg of rocks from the Moon, whichhave been used to help us understand its origins and structure.

　　从1961年到1927年，美国的阿波罗计划从月球上取回了380多公斤的岩石标本。这些带回来的标本对研究月球的起源和构造有很大帮助。

　　(via BBC英伦网)

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（实习编辑：高奕飞）