unaccompanied [ˌʌnəˈkʌmpənid]

例句:

• It is estimated that every year 50 unaccompanied children arrive in Britain.
  据估计，每年有50名儿童独自来到英国。
  
• The piece is most often sung unaccompanied.
  这首歌大部分是在没有伴奏的情况下清唱的。
  
• Unaccompanied bags are either searched or removed.
  单独运送的包裹或是遭到搜查，或是被搬走。
  
• Frequently, a solo stretch might be completely unaccompanied.
  来自BBC
• The experts say unaccompanied children are particularly vulnerable.
  来自VOA
• Unaccompanied children are extraordinarily vulnerable to abuse and to abduction.
  来自VOA