Only Numbers,letters & underscores are allowed 是啥意思?

User Name:Numbers&Letters only,Nospecial characeers,No spaces Username can only contain letters,numbers and underscoress什么意思 Passwords must contain only Latin letters and numbers是什么意思 Only Numbers,letters & underscores are allowed 是啥意思? Your nickname can only contain letters and numbers Login must contain only letters ,numbers,and underscores Username must contain only letters and numbers.No special characters allowed是什么意思 only plain latin letters and arabic numbers allowed.no other characters will be accepted. 关于penpalworld的nickname的问题.输入后总是出现Your nickname can only contain letters and numbers upper and lower case letters and numbers. 1.Your username can only contain letters A-Z or numbers 0-9 2.Password Confirm Password 3.Postcode Password和 Confirm Password 这是两个…… The username may only contain letters and numbers (A-z,0-9) and dashes帮我取个username吧 要求如上所示 Your RCON Password must contian at least 3 characters and consist only of numbers and letters进CS1,6的时候显示的 Please enter at 6 letters or numbers for question是什么意思? You can only enter numbers什么意思 Letters and/or number only是什么意思? In the order shown Please enter both numbers and letters什么意思? The following letters stand for differenet numbers.work out what they are.O stands for 4.