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unwritten + noun
Many companies have unwritten rules about dress code.
许多公司都有关于着装的不成文规定。
不成文的；心照不宣的
先理解核心含义，再看它在真实句子里的用法。
不成文的；心照不宣的
Implicit or understood but not formally articulated.
Many companies have unwritten rules about dress code.
许多公司都有关于着装的不成文规定。
未写的；非书面的。
Not written.
口头的或以非书面方式传达的。
Oral or otherwise communicated without writing.
隐含的；心照不宣但未正式阐明的。
Implicit or understood but not formally articulated.
无字迹的；空白的。
Containing no writing; blank.
In this team, finishing your work on time is an unwritten rule.
在这个团队里，按时完成工作是条不成文的规定。
Their unwritten agreement lasted for decades.
他们那份没有写下来的协议持续了几十年。
The blank, unwritten pages of the diary made her feel free.
日记本空白未写的页面让她感到自由。
Many companies have unwritten rules about dress code.
许多公司都有关于着装的不成文规定。
This agreement is unwritten but mutually understood.
这份协议没有书面形式但双方都理解。
The constitution remains unwritten in that country.
那个国家的宪法仍然是不成文的。
不成文的规矩；潜规则
There is an unwritten rule that you should not ask colleagues about their salary.
有一条不成文的规矩：你不应问同事的薪水。
不成文法；约定俗成的规矩
In this workplace, it is an unwritten law that you don't take the last piece of cake.
在这个工作场所，不拿最后一块蛋糕是一条不成文的规矩。
口头协议；默契
The partners had an unwritten agreement never to compete on price.
合伙人之间有个默契，绝不在价格上互相竞争。
不成文宪法
The UK is often said to have an unwritten constitution.
人们常说英国拥有不成文宪法。
不成文的准则
Among the mountaineers, there is an unwritten code that you help anyone in trouble.
登山者之间有一条不成文的准则：要向遇险的人伸出援手。
不成文的规定
There's an unwritten rule that you should never show up empty-handed to a dinner party.
有一条不成文的规定：参加晚宴时不应该空手而去。
不成文法；惯例
It's an unwritten law in this office that everyone brings coffee for the team.
这个办公室里有一条不成文的规矩：每个人都要给大家带咖啡。
不成文宪法
Britain is often said to have an unwritten constitution.
人们常说英国有一部不成文宪法。
其余的仍未书写。
This line is from Natasha Bedingfield's 2004 hit song "Unwritten", which became widely known as the theme song for the reality TV series The Hills. It encourages listeners to see their lives as an open book whose ending they can still write.
这句歌词出自娜塔莎·贝丁菲尔德2004年的热门歌曲《Unwritten》，它因成为真人秀《The Hills》的主题曲而广为人知。歌词鼓励听众把自己的人生看作一本尚未写完的书，结局仍由自己书写。
Use unwritten naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记：un（没）+ written（写）＝没写下来；不成文的规矩指心照不宣、未正式写出的规则。
语域：neutral 常见场景：social conventions and unwritten rules、legal and political arrangements without codification、oral or informal communication 该词在多数语境下为中性，没有明显的正式或非正式色彩。多用于“unwritten rule”“unwritten law”等搭配，指虽未正式写下来、但被普遍理解或遵守的规则；日常和书面语中均可使用。若指“没有字迹/空白”时也属中性，多出现在对书面材料的描述中。
常用于修饰规则、法律等名词，表示不成文的。常作定语或表语。
Dictionary facts from ECDICT, WIKTIONARY.