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unwritten

美音:[ən´rıtən ]点这儿播放单词美音发声
英音:[ən´rıtən ]点这儿播放单词英音发声
adj.未成文的,口头的,没有记录的,不成文的

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unwritten为短语/超纲词汇

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written    

unwritten


/,ʌn'rɪtn; ʌn`rɪtn/
adj not written down 未写下的; 不成文的. an unwritten law/`rule law/rule that is based on custom and practice, but is not written down 不成文法[规定].

unwritten


adj
an unwritten rule, law, agreement etc is one that everyone knows about although it is not official
 unwritten rules of social behaviour
1. Britain has an unwritten constitution, and the United States has a written constitution.
    英国有不成文的宪法, 美国有成文的宪法.

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