为简便起见，您可以将代码打包成用于字符串替代的公共XSL模板，以使它可重用。

For convenience, you can package the code in a common XSL template for string replacement, thus making it reusable.

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所以，相应的操作处理程序必须处理这些类型，并最终返回一个公共类型—例如一个字符串。

So the corresponding action handlers must process those and ultimately return a common type — for example, a string.

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string 模块包含了几种类型的事物，如函数、方法和类；它还包含了公共常量的字符串。

The string module contains several types of things, such as functions, methods, and classes; it also contains strings of common constants. For example

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