词法处理程序并不做很多事情：它只将事件转发给管道中的下一个过滤器，但 XSLT 处理器需要它们。
The lexical handler doesn't do much: It simply forwards the events to the next filter in the pipe, but the XSLT processor requires them.
若用词法和语法分析程序共同组成语言处理系统，其函数名、参数和返回值应一致。
If system of processing language is established with programs of lexical analysis and parsing, the function name, parameter and return value should be accordant.
在状态转换图的基础上，构造词形表，为每个状态设计一段处理程序，使词法分析能从字符串中识别单词。
At the base of converted-state chart, building morphology table, designing a section of program for every status, in order to enable lexical analysis to recognize word from character string.
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