此单元格含有数据库关键字字段的最近检索值。

This cell contains the most recently retrieved value for a database key field.

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有些字段你可能不想它被分词，比如一连串的数字字段。

Some fields you may not want to be tokenized, for example a serial number field.

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比如，可以添加一个关键字字段，然后允许按关键字搜索。

For example, you could add a keyword field, then allow searches by keyword.

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比如，可以添加一个关键字字段，然后允许按关键字搜索。

For example, you could add a keyword field, then allow searches by keyword.

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