...按键 [:lower:] 代表小写字元,亦即 a-z [:print:] 代表任何可以被列印出来的字元 [:punct:] 代表标点符号 (punctuation symbol),亦即: ? !
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甚至有的组合代表标点符号。
以点、横画、间隔的安排来代表字母、数字或标点符号的系统。
System for representing letters, numerals, and punctuation marks by a sequence of dots, dashes, and spaces.
无论身处哪种境地,都可用几个简单的标点符号所代表的人生态度来传达。
Whatever situation you find yourself in, simple punctuation marks can represent your attitude toward life.
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