Usernames can only use the characters a-z,0-9 and underscore 急用
问题描述:
Usernames can only use the characters a-z,0-9 and underscore 急用
答
用户名只能用a到z的字母,0-9的数字和下划线.
Usernames can only use the characters a-z,0-9 and underscore 急用
用户名只能用a到z的字母,0-9的数字和下划线.