adj.没有观察到的,无人遵守的;
例句:
She slipped past the guard unobserved.
她从卫兵身边溜过而未被觉察.
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.
Fix, unobserved, followed them.
而费克斯却悄悄地在后面跟着.