请求包含字母、数字和标点符号的密码。
Require passwords to include letters, Numbers and punctuation.
通过键盘，可以将英文字母、数字、标点符号输入到计算机中，因而可以向计算机发出命令。
Through a keyboard, English letters, Numbers and punctuation can be inputted into the computer, so keyboards can say the words.
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.
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