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once-in-a-blue-moon
once-in-a-blue-moon
英
[once-in-a-blue-moon]
美
[once-in-a-blue-moon]
中文释义
na. 〈非正式〉难得;罕见;千载难逢
单词分析
单词结构:
once-in-a-blue-moon
字母数:19
记忆提示
🎯 重点记忆:
单词拼写:once-in-a-blue-moon
核心含义:na. 〈非正式〉难得;罕见;千载难逢
相关含义:罕见、千载难逢
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更新时间:2026-04-11 13:21:39