| 词汇 | blue moon |
| 释义 | blue moon noun [ C ] environment specialized (also Blue Moon) uk/ˌbluː ˈmuːn/ us/ˌbluː ˈmuːn/ （每两年半出现一次的）蓝月亮，一个月中的第二个满月 the second full moon (= the time when the moon is shaped like a complete disc) in a month, that appears around every two and a half years How often does a Blue Moon occur, and when will there be another? 蓝月亮多久会出现一次，下次什么时候？ A blue moon doesn't look blue. 蓝月亮看起来并不是蓝色的。
Idiom once in a blue moonidiom 少有地 not very often My sister lives in Alaska, so I only see her once in a blue moon. 我姐姐住在阿拉斯加，所以我很少去看她。 Once in a blue moon, there's an issue I can't resolve. 偶尔会有我无法解决的问题。 |
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