v.看见,发现( spy的过去式和过去分词 );当间谍;从事间谍活动;搜集情报;
例句:
He has spied on that man for two weeks.
他一直监视那个人有两个星期了.
You should have spied out the land before you beat him.
你打他以前应该察明真相.
We spied a stranger hanging around the corner.
我们发现一位陌生人在拐角处闲荡.