客户端和服务器的程序必须通过协议规定的过程和数据类型进行通信。
The client and server programs must communicate via the procedures and data types specified in the protocol.
最佳实践是确定一个维护已声明数据类型的一致性的过程，以供构建复合应用程序的组织中的所有开发人员使用。
It's a best practice to identify a process for maintaining consistency in declared data types for use by all the developers in an organization who build composite applications.
只有当应用程序实际上需要该类，而不是在编译或运行时过程中，此类的类型才成为显式的。
The class type will become explicit only when the application actually needs the class, not during compile or run time.
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