username [ˈju:zərneɪm]

例句:

• This is usually a username, e - mail or a login identification number.
  这通常是用户名 、 电子邮件或注册标识号.
  来自互联网
• Enter a username and password to get into the system.
  进入系统请键入用户名称和密码。
  
• Please enter your username.
  请键入你的用户名。
  
• So I registered with a variation of my username.
  来自SA
• Why am I asked for a separate name and username?
  来自BBC
• I also had use only one username on different sites.
  来自BBC