达成的共识是我们需要一个单独的、已定义的、可扩展的框架，在此基础上能将所有这些分层堆积到服务描述堆栈中。
The consensus was that we needed a single, defined, extensible framework upon which to layer each of these into the Service Description Stack.
太多的架构分层(特别是在需要之前)使得设计更为困难，因为您需要转换设计必须依赖的基础。
Too much architectural layering (especially before it is needed) makes design harder because you shift the foundation the design must rest upon.
UML2(以及UML - RT)支持结构化的类和结构分层，此支持是处理大型系统时的基础。
UML2 (as well as UML-RT) has support for structured classes and structure hierarchy; this support is fundamental when dealing with large systems.
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