Many other open source tools exist for pre-conversion or augmenting and improving the documents that Calibre has converted.

现在已经有很多其他的开源工具可用来预转换或扩充和改进Calibre所转换的文档。

youdao

NLTK corpora documents often come pre-tagged for parts of speech, but you can certainly add your own tags to untagged documents.

NLTK 全集文档通常有部分专门语言已经预先添加了标签，不过，您当然可以 将您自己的标签添加到没有加标签的文档。

youdao

Prior to importing XML documents received from third parties, it is a good idea to validate these documents against a pre-defined XML schema.

在导入来自第三方的 XML 文档之前，最好根据预定义的 XML 模式检验这些文档。

youdao

MNEF's documents were forgeries, pre-dated to turn fiction into fact and so to explain payments into either Mr Strauss-Kahn's own pockets or those of the Socialist Party.

ECONOMIST: A sad adieu to Dominique Strauss-Kahn

Mortgage pre-approvals are pretend documents.

FORBES: The Mortgage Pre-Approval Con

Coroner McCauley scheduled a "pre-inquest" open meeting for 27 January where the Gardai and the family would exchange documents.

BBC: Denis Donaldson inquest postponed for the fifth time