adj.沒(méi)有觀察到

It was easy for him to leave the house unobserved. 他很容易從這座房子溜走而不被發(fā)現(xiàn)。

He found it is easy to leave the house unobserved. 他發(fā)現(xiàn)很容易從這座房子溜走而不被發(fā)現(xiàn)。

Hardly ever did they manage to meet unobserved. 他們幾乎從不安排會(huì)面，卻沒(méi)有受到注意。