在上面的示例中，“地址”可能需要添加一个限定符或者扩展数据结构，从而识别“地址”的类别。

In the example above, "address" may require adding a qualifier or extending the data structure to identify the category of "address".

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这包括可搜索的实际内容和几部分元数据(包括惟一资源标识符(uri))，以便惟一地识别稍后检索的行。

This includes the actual content that is searchable and several pieces of metadata, including a unique resource identifier (URI) in order to uniquely identify the row for later retrieval.

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基于以上所述，可以将附件容器(清单5)实现成包含附件数据源的映射，并以附件标识符唯一识别。

Based on the above, the attachments container (Listing 5) can be implemented as a map that contains attachment data sources and are keyed by attachments identifiers.

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