This text search package and its associated functions, referred to as the text search engine, is specifically designed to perform fast retrieval and automatic indexing of text data.
这个文本搜索包和它的相关函数被称为文本搜索引擎，它是专门设计用来执行文本数据的快速检索和自动索引。
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I demonstrated data retrieval using db4o's QBE engine last time, but I'll quickly recap here.
上一次我使用了db4o的QBE引擎演示了数据检索，这里将快速回顾一下。
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Lucene is an open source information-retrieval search engine, best known for its full-text indexing capabilities and its ability to search the Internet.