unobserved [ˌʌnəbˈzɜ:rvd]

例句:

• He entered the village almost unobserved amid the general festivity.
  在一片喜庆的气氛中,他进村时几乎没有人注意到.
  
• John had been sitting, unobserved, in the darkness.
  约翰一直坐在黑暗中，没有被人察觉。
  
• It's not easy for somebody to get into the building unobserved.
  进入这栋大楼而不被发现很不容易。
  
• Day had unobserved stolen upon them.
  来自S. Lee
• This was not unobserved by Edgar.
  来自F. Burney
• The latter unobserved by the referee fisted the ball into the net.
  来自Daily Chronicle