一个良好的密码将是一个具有混合大写，小写和特殊字符。
A good password will be one which has a mix of upper-case, lowercase and special characters.
不包含大小写、数字和特殊字符的密码？
Passwords that don't have a mix of lowercase and uppercase letters, numerals, and special characters?
不包含大小写、数字和特殊字符的密码？
Passwords that don't have a mix of lowercase and uppercase letters, numerals, and special characters?
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