| 例句 |
They had planted secret agents in many countries who could be activated whenever needed.他们在许多国家都安插了一旦需要就可起用的特务。He had been a secret agent of the enemy all along.他一直是敌人派来的特务。The Secret Service screened hundreds of students to select its agents.特务机关仔细审查了数百名学生以选择特务人员。He is indignant at suggestions that they were secret agents.有人暗示他们可能是特务，这让他非常气愤。 |