In this particular regular expression, we encounter the '[[: space:]]' character class.
在这个特别的规则表达式中，出现了' [[：space：]] '字符类。
In regular expressions, square brackets just mean "match any character in the brackets."
在规则表达式中，方括号只表示“查找与方括号中任何字符的匹配字符”。
The first character determines whether it's a regular or a special file.
第一个字符决定它是否是一个老客户或一个特别的文件。
The regular expression serves as character pattern to compare with the text being searched.
规则运算式可以做为与所要搜寻之文字进行比较的字元模式。
The official script in calligraphy is a transition between seal character, and regular script.
隶体是书法从篆体到楷体的过渡。
The official script in calligraphy is a transition between seal character, and regular script.
隶体是书法从篆体到楷体的过渡。
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