英语词组once in a blue moon是什么意思，短语翻译、用法及例句-英语词组固定搭配大全

词组	once in a blue moon
释义	once in a blue moonadv. phr.Very rarely; very seldom; almost never. 难得有一次；极为罕见。◆ Coin collecting is interesting, but you find a valuable coin only once in a blue moon.硬币收藏很有趣，但有价值的硬币却千载难逢，极为罕见。
随便看	armed to the teeth arm in arm around around around Robin Hood's barn around the clock around the clock also the clock around around the corner arrive at as a last resort as a matter of fact as a matter of form as an aside as a rule as best as one can as far as as far as or so far as as far as that goes as far as that goes or as far as that is concerned or so far as that is concerned also so far as that goes as far as that is concerned as follows as for as good as as good as one gets as good as one's promise

英语词组固定搭配大全包含9718条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。