要处理的风险和一些要整理的定义是存在的，但如果能小心地管理，重叠迭代可以成为一个组织项目的有用方法。
There are risks to be handled, and some definitions to be cleaned up, but if managed carefully, overlapping iterations can be a useful approach to organizing a project.
协调 是通过去掉重复的数据或重叠的定义，确保填充重叠和类似的通用化和聚合级别。
Harmonization is the method to ensure population overlap and comparable levels of generalization and aggregation by the removal of duplicate data or overlapping definitions.
F&O 库中的一些函数和 EXSLT 中定义的函数重叠，但是两者都提供了对方所不具备的函数。
Some functions in the F&O library overlap with functions defined in EXSLT, while each library provides functions not supported by the other.
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