I recommend at LEAST a mixture of Numbers, lowercase letters, and uppercase letters.
我建议至少是数字，小写字母和大写字母的混合。
A limitation of this technique is that it only calculates Numbers between 600 and 65,000 for the specified user name format of three lowercase letters followed by four digits.
该技术的一个限制是，对于三个小写字母加上四个数字的指定用户名格式，它仅计算600到65,000之间的编号。
The name of the package itself (not the filename, just the name of the package) can contain lowercase letters, Numbers, and the "-" and "+" characters.
软件包本身的名称(不是文件名，仅仅是软件包的名称)可以包含小写字母、数字以及“-”和“+”字符。
A valid name can contain only lowercase letters, Numbers, periods, underscores, and dashes.
有效的名称只能包含小写字母、数字、点号、下划线和连字符。
The key should be as random a string as you can concoct, with numbers and uppercase and lowercase letters.
你可以设置一个编造的随机字符串作为你的钥匙，最好包括数字、大写 字母、小写字母。
Each template can be adjusted up situation and the uppercase and lowercase letters, Numbers and special symbols.
每个模板都可以调整注册情况和大小写字母，数字及特殊符号。
Use strong passwords that combine uppercase and lowercase letters, Numbers, and symbols.
使用结合大小写字母、数字和符号的强式密码。
Use strong passwords that combine uppercase and lowercase letters, Numbers, and symbols.
使用结合大小写字母、数字和符号的强式密码。
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