The similarity is that both provide a way to cope with unknown elements and functions; the difference is that for future-proofing, the unknowns are in the XSLT namespace.
相似之处在于两者都提供一种方法来处理未知元素和函数，区别在于对于后验来说，未知的内容在XSLT名称空间中。
How do you deal with unknown unknowns in architecture?
您如何应对架构中的这些未知的未知数呢？
Investors face a world marked by "known and unknown unknowns", in the words of Donald Rumsfeld, a former American defence secretary.
用美国前防长拉姆斯·菲尔德的话来讲，投资者身处一个“已知的未知和未知的未知”的世界。
And as the unknown unknowns have turned into known unknowns, the system has been experiencing postmodern bank runs.
伴随着未知的未知转变为已知的未知，金融体系正在经历后现代主义版本的银行挤兑风潮。
If you have written any nontrivial software, you can relate to the unknown unknowns problem - one of the biggest problems in software design.
如果您曾编写过一些重要软件，您可能涉及过未知之未知问题—软件设计中最大的一个问题。
But there are also unknown unknowns. There are things we don't know we don't know.
但是，还有未知的未知，那些我们不知道我们不知道的事情。
Subjective uncertainty is about the “unknown unknowns”.
主观上的不确定即“未知的未知”。
Software is rife with unknown unknowns - situations you think you understand at the outset only to discover that the problem is different from your first impressions (and typically much harder).
软件开发充满了尚未意识到的未知数—通常会有这种情况，您认为您在开始的时候已经理解了，却发现问题不同于您的第一印象(通常更复杂)。
Subjective uncertainty is about the "unknown unknowns".
主观的不确定性则关于“未知的未知方面”。
Every decision should have a contingency plan for when those unknown unknowns arise and deem your primary course of action obsolete.
每一项决策都应该制定一项应对“未知的未知”和主要行动方案失败等情形的应急方案。
Unknown unknowns are when Murphy likes to throw another wrench in the mix that you simply can't plan for, such as (continuing with the traffic example) a vehicle accident or engine breakdown.
根据墨菲定律，“未知的未知”就是你根本没有计划到的意外事件，比如(继续以交通为例)交通事故或发动机故障。
Life is full of unknowns, and you can solve the unknown person, either or the unknown!
人生充满未知数，而你就要么解决这个未知数的人，要么成为这个未知数！
Violent competition over scarce resources may erupt with or between emerging superpowers, such as China and India. And so on into the unknown unknowns.
但是，伊朗可能会引发中东地区的核军备竞赛，还需要与中国、印度这样正在崛起的新兴超级大国进行稀缺资源的激烈竞争，还有现在尚无人可知的未知事件。
Luckily, the unknowns in the universe is unknown.
所幸，宇宙中还有未知的秘密。
But China is where the unknown unknowns in the global economy currently lurk.
不过，中国目前是全球经济中未知因素潜伏的地方。
And as the unknown unknowns have turned into known unknowns, the system has been experiencing postmodern.
当那些一无所知的受骗者意识到发生了什么，这个体系就会经历后现代的挤兑。
This article presents a general method to solve Boolean equations (or inequality) or system of simultaneous equations of an unknown or any number of unknowns.
我们在本文中给出了布尔方程(包括一元及多元布尔方程蛆和布尔不等式方程组)的一种通用解法。
But there are also unknown unknowns. These are things we do not know we don't know.
但也有没人知道的未知事情——也就是我们不知道的未知事情。
All such events are inherently unforecastable. This is not because they are "unknown unknowns".
所有这些事件从根本上来说都是不可预测的。
Objective uncertainty is about what Donald Rumsfeld (in a different context) referred to as the "known unknowns". Subjective uncertainty is about the "unknown unknowns".
客观的不确定性是在DonaldRumsfeld在不同领域提出的关于“已知的不确定因素”。
Objective uncertainty is about what Donald Rumsfeld (in a different context) referred to as the "known unknowns". Subjective uncertainty is about the "unknown unknowns".
客观的不确定性是在DonaldRumsfeld在不同领域提出的关于“已知的不确定因素”。
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