代表理解。
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.
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。
U: be UNDERSTANDING to your fellow beings. You may never know what other person might have gone through in life so never be judgmental in your approach.
理解你的同伴。你可能不知道别人生活中经历过什么,所以永远不要从你的角度去评判别人。
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