a blue moon

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  英语中有句俗语叫"once in a blue moon",翻译成中文就是"千载难逢"

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  a blue blood moon 带蓝晕的血月.

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  "blue moon"真的是"蓝色的月亮"吗?(姿势贴)

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  once in a blue moon

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  dailyenglish21每日英语onceinabluemoon

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  special new year with a blue moon in the americas and partia

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  blue moon

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  预售 按需印刷 once in a very blue moon

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  但英语的对应说法却是"once in a blue moon",直译过来就是"曾在蓝色

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  once in a blue moon, rare occurrence

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  once什么意思onceinabluemoon什么意思

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  onceinabluemoon

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  a blue moon?really?

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  a "blue moon" isnt really blue, as this artist rendering

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  abluemoon真的不是蓝月亮吗

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  once in a blue moon 千载难逢

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  second blue moon of 2018 arrives saturday; its the last one

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  onceinabluemoon的超级蓝血月

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  the second blue moon of 2018 is this weekend - nottinghamshire

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  once in a blue moon

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