1·The user name should consist of alphanumeric characters and be a valid structure for all systems within an organization so that each person only has one user name.
用户名应该由字母数字字符组成，并且对于组织内部所有的系统都应该是有效的结构，以便每个人只使用一个用户名。
2·This identifier may be a character string, numeric, or alphanumeric value.
这个标识符可以是字符串、数字或字母数字值。
3·The node name structure consists of alphanumeric characters only.
节点名结构中只包含字母数字字符。
4·Messages must be no longer than 160 alphanumeric characters and contain no images or graphics.
消息不得超过160个字母数字字符且不包含图像或图形。
5·As shown below, each line in every file provided will be transformed into an inflected alphanumeric string.
如下所示，提供的每个文件中的每一行将被转换为变形后的字母数字字符串。