unobserved.

同根派生

英汉例句

• He found it is easy to leave the house unobserved.
  他发现很容易从这座房子溜走而不被发现。
• Hardly ever did they manage to meet unobserved.
  他们几乎从不安排会面，却没有受到注意。
• She slipped past the guard unobserved.
  她从卫兵身边溜过而未被觉察。
• It was easy for him to leave the house unobserved.
  他很容易从这座房子溜走而不被发现。
• The discipline has been unobserved.
  纪律废弛。