Only by taking an iterative approach where each iteration combines top-down and bottom-up design is an organization likely to achieve Process Isomorphism.

只有采用迭代的方式，在每个迭代中结合自顶向下和自底向上的设计，组织才有可能获得流程同构。

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Enterprises are free to use top-down, bottom-up, or a combination of top-down and bottom-up design methods within the framework of the models discussed.

在模型讨论的范围之内，企业可以随意使用自顶向下、自底向上、或是二者结合的设计方法。

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The bottom-up approach tends to lead to poor business-service abstractions in case the design is dictated by the existing IT environment, rather than existing and future business needs.

在设计取决于现有的 IT 环境而不是现在和将来的业务需要的情况下，自底向上的方法往往会导致不好的业务服务抽象。

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