有些供应商允许自己编写排序器。

Some vendors allow you to write your own collators.

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样式表基本上和第一个相同，主要的区别是使用了不同的自定义排序器。

This stylesheet is virtually identical to the first stylesheet; the main difference here is that you use a different custom collator. Here's the fragment of the stylesheet that invokes the Java class.

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优先排序器：应用于数据块与加载以确定处理顺序的一个规则与优先级列表。

Prioritizer: a list of rules and priorities applied to chunks and loads to determine order of processing.

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