没有不成文的规章，就不会有文明生活。
他们遵守那条约束他们所有人的不成文规定—不许说话。
They obey the one unwritten rule that binds them all–no talking.
这个家伙打破了男人们应该遵守的不成文规则。
他的行为违反了不成文的社交规范。
His behavior transgressed the unwritten rules of social conduct.
他们违反了这次会议的不成文规定。
他牢记那条不成文的规矩。
通常这无一例外的成了一条不成文的规则。
这是一个不成文的法规。
那些权利和义务是基于一种不成文的约定。
Those rights and obligations are based on an unstated consensus.
这句话是商业经营的不成文规则，就是简单的百分比问题。
It is one of the unwritten laws of business, a matter of simple percentages.
然而，这些不成文的英国早期历史确实可读的。
But the history of the early Britons, though it was never written, may be read.
因此，要辨明另一国家不成文的规定到底有多么困难呢？
So how much more difficult it to discern the unwritten rules of another country?
幸运的是，我找到了一位导师，帮助我理解了那些不成文的游戏规则。
Luckily, I had a mentor who helped me figure out the unwritten rules.
美国媒体一条不成文的规矩就是付费电视的费用总是不断增加。
One of the unofficial rules of American media is that pay-television bills always rise.
好莱坞有条不成文的禁忌，那就是电影业不应该步音乐行业的后尘。
A common refrain in Hollywood is that the film business must not go the way of music.
但这里有一个不成文的社会契约，即回报应基于个人的努力和成就。
But there is an implicit social contract that links rewards to effort and accomplishment.
这里与阿富汗其余地方一样，存在着不成文的道路礼节，以示互相尊重。
Like everywhere in Afghanistan, there was road etiquette to respect.
当编写结构型的标记时，按从上到下从左到右的顺序，这是不成文的规范。
When writing structural markup, think in terms of top to bottom and left to right because that's the accepted convention.
我对自己有个不成文的要求，既然有人花时间给我写信，我就应该出于礼貌给他们回信。
I had an unwritten rule that if someone took the time to write, I would give the courtesy of an answer.
在所有的成文和不成文的历史中，我们都无法找到关于最初居住在英国的人类信息。
There is nothing in all history, no written record of any kind, to yield us any information concerning the original possessors of the land.
每天，价值数十亿美元的证券都基于一个不成文的协议而流通，即要时刻满足兑现要求。
Billions of dollars in securities are traded each day with nothing more than an implicit agreement that trading partners will pay up when asked.
法律没有规定他们杀人无罪，但存在于委内瑞拉贫民窑里的不成文规矩却让警员们经常可以知法犯法。
The law says they cannot kill with impunity. But in the slums of Venezuela a separate set of rules applies, which all too often allows police officers to do just that.
这就是为什么：硅谷文化有一个不成文的规矩，如果你不喜欢某个工作，或者你觉得公司没啥前途，你走人即可。
Here's why: Valley culture has an unwritten rule that if you don't like a job, or if you think your company isn't going anywhere, you leave.
但是对于品牌，使用Twitter是有艺术的，在Twitter上最成功的企业都遵循一系列不成文的规则。
But for brands, there's an art to using Twitter, and the most successful at it follow an unwritten set of rules.
但是对于品牌，使用Twitter是有艺术的，在Twitter上最成功的企业都遵循一系列不成文的规则。
But for brands, there's an art to using Twitter, and the most successful at it follow an unwritten set of rules.
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