counterterrorism
noun [ U ] uk/ˌkaʊn.təˈter.ər.ɪ.zəm/ us/ˌkaʊn.t̬ɚˈter.ər.ɪ.zəm/
反击恐怖主义，反恐活动
action intended to prevent violence for political purposes
The city has fewer than 50 officers assigned to counterterrorism. 将近50名警察被派到这个城市打击恐怖主义。
Counterterrorism experts concede that the threat is real. 反恐专家承认威胁是真实的。