虽然从技术的角度看，其没有打算充当地址的通用基类，但还是可以这样来使用。
While technically not meant to act as a generic base class for addresses, it could be used for that purpose.
业务应用程序的类型宽泛，从自由职业者的帐务管理到银行和金融系统的文档管理系统都位列其类。
Business applications range in type from invoicing for freelancers to content management systems to document management systems to banking and financial systems.
另外，绑定派生类不会专门化其从其它地方继承的方法。
In addition, binding descendent classes does not specialize their methods that are inherited from elsewhere.
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