infiltrates , infiltrating , infiltrated
If people infiltrate a place or organization, or infiltrate into it, they enter it secretly in order to spy on it or influence it.
Activists had infiltrated the student movement.
激进分子已经渗入学生运动。
To infiltrate people into a place or organization means to get them into it secretly in order to spy on it or influence it.
He claimed that some countries have been trying to infiltrate their agents into the republic.
他声称有些国家一直试图使他们的特工渗入该共和国。