假设你负责为你的企业维护一个管理薪水册以及职员功能的大型软件系统。
Suppose you were responsible for maintaining a large software system that managed the payroll and personnel functions for your organization.
这是一个行之有效的原则，一个大型软件系统的最佳结构是一个模块化的。
It is a well-established principle that the best structure for a large software system is a modular one.
随着软件系统规模不断扩大，开发大型软件系统所耗费的时间和成本也成倍增加。
With the software system development scale unceasingly expands, the time and cost of large software system doubled.
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