Peter Ludwig was a celebrated entrepreneur and popular social activist in Germany as well as a world-famous collector with thousands of invaluable art works.

彼得·路德维希是德国著名的企业家和受欢迎的社会活动家，也是世界著名的收藏家，拥有数千件无价的艺术品。

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Nevertheless, it is still invaluable as a result of the above reverse engineering steps. The main benefits of an Enterprise Data Model are

不过，逆向的工程步骤也是非常有价值的。

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The directory stack functionality is a good example; it becomes invaluable when you want a quick method of visiting a directory without losing your train of thought.

目录堆栈机制就是一个很好的例子；当您希望快速访问某个目录而不打断您的思维时，它就变得非常有价值了。

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So historians can and in fact have many times taken issue with a lot of Weber's historical claims. But he's invaluable, as the critic John Guillory has argued, for our purposes in the understanding of Milton and of a lot of the cultural business of the seventeenth century in general.

所以历史学家可以，事实上已经对韦伯的历史学断言,持反对意见，但就像评论家约翰古月里说的，对我们来说，在对弥尔顿以及很多,17世纪文化方面的事的了解上,他的意见是非常宝贵的。

耶鲁公开课 - 弥尔顿课程节选

Over a distinguished career that spans three decades, Judge Sotomayor has worked at almost every level of our judicial system, providing her with a depth of experience and a breadth of perspective that will be invaluable as a Supreme Court justice.

CNN: Transcript of Obama-Sotomayor announcement

"Over a distinguished career that spans three decades, Judge Sotomayor has worked at almost every level of our judicial system, providing her with a depth of experience and a breadth of perspective that will be invaluable as a Supreme Court justice, " Obama said.

NPR: Obama To Nominate Sotomayor To High Court

Finding the hubs of social networks can be invaluable from a public health point of view, the authors say.

CNN: Obesity, STDs flow in social networks