在这本著作中，他对一些哲学里常年不衰的问题进行阐述并给出了自己的定义，包括罪恶、自由意志和决定论，正义和美德的性质等问题。

In the book he sets out and defines some of the perennial problems of philosophy, including the problem of evil, free will and determinism, the nature of justice and of virtue.

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服务规范为潜在消费者决定一个服务是否适用于它们的问题，以及如果适合的话如何真正使用它，定义了必要的信息。

A service specification defines information necessary for potential consumers to determine if a service is applicable for their problems, and if so, how to actually use it.

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然而，难点在于要解决定义过多的问题，大多数定义是相互矛盾的且仅揭示了Web服务可以是什么或者可能成为什么的一部分。

The challenge, however, is to overcome the abundance of definitions, most of which are contradictory and only reveal a fragment of what Web services can be or may become.

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