说明：  精通正则表达式，master regex的中文版，网上几乎没有的绝版中文教材，不过只有其中精华的三章，但是已经够用，适合看不惯英文的朋友
(Versed in regular expressions, master regex of the Chinese version of the print-line almost no teaching materials in Chinese, but only one essence of chapters, but has enough for a friend could not understand English)