客户端代码必须通过指定尖括号中的类型参数来声明和实例化构造类型。

Client code must declare and instantiate a constructed type by specifying a type argument inside the Angle brackets.

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在这里实例中，我们也需要声明和初始化一个变量，用来处理Web服务返回的Address复杂类型，如清单13。

In this example, we also need to declare and initialize a variable to handle the Address complex type returned by the Web Service, shown in Listing 13.

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在常见方案中，不应要求对嵌套类型进行变量声明和对象实例化。

Declaration of variables and object instantiation for nested types should not be required in common scenarios.

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