A-Z的意思|示意

The subset a-z, therefore, matches all letters, independent of case.

因此，子集a - z将匹配所有字母，而不区分大小写。

Simply hit the Escape key, press:, type 2, 4! Tr 'a-z' 'a-z', and hit the Return key.

只要按一下escape键，然后按：键，再输入2,4 ！ tr ' a - z ' ' a - z '，最后按一下return键。

The paranoid method will strip a string of all characters that are not alphanumeric (a-z, a-z or 0-9).

paranoid方法将去掉字符串中所有不是字母与数字(a - z、a - z或0 - 9)的字符。

Within the brackets, you can refer to a range of characters by using - (hyphen), as in [a-z] or all lowercase letters.

在方括号中，通过使用 -（连字符），比如 [a-z] 或者所有的小写字母，您可以引用某个范围的字符。

He knew his subject from A to Z.

他通晓自己的学科。

In this sample program, only alphabetic and numeric characters (a-z, a-z, and 0-9) can be ciphered.

在这个示例程序中，只能加密字母和数字字符(a - z、a - z和0 - 9)。