2010-11-28 1 Chapter2 Grammar and Language 三．教学内容 串和语言（ 串和语言（Strings and Languages ） 文法和语言的定义..
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正则表达式(regular expression, regexp)是用于描述字符串集的匹配模式的概念，在很多程序和语言中都是通用的。
The concept of regular expressions (regexps) -a notation for describing a pattern that matches a set of strings-is common across many programs and languages.
两种语言都能够通过UR l字符串传递和接收参数。
Both languages are able to pass and receive parameters through the URL string.
可以设置这些属性以惟一识别过滤器、指定查询字符串和指定解析查询字符串的查询语言。
These properties can be set to uniquely identify the filter, specify a query string, and specify the query language that parses the query string.
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