正则表示式是一种强大的匹配和替换字符串的方式。
Regular Expressions are a powerful way to match and replace strings.
你还可以预览匹配和替换结果以方便验证你的正则表达式是否准确。
You can simply preview the matches and the replacements if you wish to just search using regular expressions or to ensure that you have your expressions correct.
正则表达式基本上就是为进行文本处理而构建的一种小型的子语言，用来进行字符串的匹配和替换。
Regular expressions are basically a small sub-language built for text processing, used to match and replace strings of characters.
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