区分贪婪模式与懒人模式是完全理解高级正则表达式的关键。
Alternatively, the ‘U’ modifier may be used to make all repetiton operators lazy. Differentiating between greediness and laziness is key to fully understanding advanced regular expressions.
顶峰百度懒人推广系统是顶峰旗下又一力作！一种全新的推广模式！
The top baidu promotion system is the peak, and a lazy person! A new marketing model.
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