XSD offers a wide range of types and simple structs.

XSD 提供了大量的类型以及简单的结构。

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When defining structs, you want to make sure that you are creating types that are readable.

定义struct时，要确保所创建的类型是可读的。

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But, notice first that the MyDelegate type breaks a rule, namely that structs cannot derive from other types other than System.ValueType.

但是，首先要注意的是，MyDelegate类型打破了这个规则，即它的结构只能从System . ValueType来获得，而不能从其他类型获得。

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