英语高手帮忙解决下Within 15 characters, a-z A-Z 0-9 ]Do not use hyphe

英语高手帮忙解决下Within 15 characters, a-z A-Z 0-9 ]Do not use hyphe username contains invalid characters.it may only use a-z,0-9 Usernames can only use the characters a-z,0-9 and underscore Please do not use numbers or special characters. 求英语高手翻译：use within 3 years of,2010 Please enter a valid username (A-Z,a-z,0-9,-,_, 请问收到一个A to Z claim该怎么解决? Your password contains invalid characters.You may only use a 求(z-a)/(z+a)(a>0)展开成z的幂级数, 用英文字母A~Z为开头写一篇短文（英语高手进.） Please do not use special characters or spaces in your handl 翻译Too bad they do not let us use the characters for those la