Different layers need different hardware and software environments.
由于层次不同，软、硬件环境要求也不同。
In complex, dynamic environments such as software development, this approach tends to break down.
复杂情形下，如软件开发这样的动态环境下，这种方式容易失败。
However, because business environments can change quickly, software requirements ought to follow.
然而，由于业务环境可能快速变化，软件需求也应当如此。
However, because business environments can change quickly, software requirements ought to follow.
然而，由于业务环境可能快速变化，软件需求也应当如此。
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