Ranges can be given as A-Z.

字元范围可以用类似“A-Z”的方式表示。

A include all lowercase characters [a-z

一个包括所有小写字符[一- Z的

A include all lowercase characters [a-z]

一个包括所有小写字符[一- Z的]

We continue our England A-Z tomorrow with the letter K…

我们将继续我们的英格兰A-Z 系列，明天我们说K。

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。

If you are asking for a name, only allow a-z and A-Z.

如果您被要求输入一个名称，那么只允许 a-z 和 A-Z。

The different code executes in terms of the character is in a-z, A-Z, or 0-9.

根据字符是 “a-z”、“A-Z”还是 “0-9”，分别执行不同的代码。

This maybe a -x+2y and maybe a -z....oh, let me make that a -1.

x+2y-z，哦，让我使它为-1。

The second area is an A-Z listing of all your contacts.

第二个区域是您所有连络人的A-Z 顺序清单。

By the way, \w (and synonym [:alnum:]) are specific to locale, while [A-z0-9_] is literally the letters A-z, the digits 0-9, and the underscore.

顺便说明一下，\w（以及同义词 [:alnum:]）是特定于区域的，而 [A-z0-9_]即表示字母 A-z、数字0-9和下划线。