After generating the QDML file from a DTD grammar I had to edit the file to define the document root element and add type information for non-String values (a couple of ints, in this case).

根据DTD文法生成QDML文件之后，必须编辑该文件来定义文档的根元素，并为非string值(在这里，是几个int)添加类型信息。

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Also, passing a non-string argument to a string-oriented function such as substring , contains , and so forth.

以及向面向字符串的函数如substring 、contains传递非字符参数等。

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Concatenation is the process to sequentially join multiple pieces of data, usually literal strings with non-string-literal data (most commonly, variables or other literals).

连接操作是一个顺序的连接多个数据片段的过程，通常是连接字符串和非字符串数据(绝大多数是变量或其它字符)。

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Out the door have gone a motorcycle factory and brewery in Shanghai, a stake in Chinese satellite operator Apstar, and a string of other non-core ventures in an effort to pay down debt.

CNN: CP'S CORE CONCERNS

It has taken a non-controlling stake in a string of businesses in recent years, from a garden centre to an online streaming service.

BBC: Tesco effect: How big firms quietly own little brands