During the interview, Brennan was also asked about the threat posed by hackers seeking to infiltrate computer networks.

VOA: standard.2010.02.07

It began to infiltrate other disciplines and was in general a high-spirited horse for that certain period of time.

它逐渐渗入到其它学科,总之是那个时代的一匹黑马。

耶鲁公开课 - 文学理论导论课程节选

The military said they were in an unauthorized area and suspected of trying to infiltrate Israel.

VOA: standard.2009.12.26

What al-Qaida's greatest strength and its most dangerous capability today is the ability to indoctrinate and infiltrate other established militant groups that have operational capacity."

VOA: standard.2010.05.05