Regions a region is a complex area of any shape and is generally defined as a Boolean combination of simpler regions.

区域-区域是任何形状的复杂区域，它通常被定义为较简单区域的布尔组合。

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Due to the handling of default Boolean combinations for filler terms, the matching focuses on non-filler terms if there is a combination of filler and non-filler terms in a search.

由于辅助词会与默认的逻辑值组合，所以如果搜索中包含了辅助词和非辅助词，那么这时匹配只关注于非辅助词。

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DB2 Net search Extender provides a flexible query language to find relevant information based on complex retrieval operations involving Boolean combination, wildcard, and fuzzy search, for example.

DB 2 Net Search Extender提供了一种灵活的查询语言，可以根据复杂的获取操作(例如涉及布尔组合、通配符和模糊搜索)寻找相关信息。

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