英语词汇once in a blue moon怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	once in a blue moon
释义	●once in a blue ˈmoon(informal) very rarely 极少地；难得地；破天荒地 See also blue
随便看	prepolishes prepolishing prepolitic prepolitical prepolitically preponderance preponderances preponderant preponderantly prepone preponed prepones preponing preportray preportrayal preportrayals preportrayed preportraying preportrays preposition pre-position prepositional prepositionally prepositioned pre-positioned

英汉双解词典包含314281条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。