Xapian组件提供了核心的数据库功能（存储信息）以及搜索和检索系统来查找单词和单词组合（参见参考资料）。
The Xapian component provides the core of the database functionality (for storing the information), and the search and retrieval system for finding words and word combinations (see Resources).
如果用户发现很难像数据库要求的那样提前定义信息，是否存在可行的存储和检索系统的替代方案呢？
If users find it hard to define their information in advance as databases require, is there an alternative storage and retrieval system that might work well for them?
有了这些信息，我们就可以构建存储和检索系统来达到这个特定的目的。
With this information, we can structure storage and retrieval systems that accommodate specific purposes.
有了这些信息，我们就可以构建存储和检索系统来达到这个特定的目的。
With this information, we can structure storage and retrieval systems that accommodate specific purposes.
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