美 [ˈterərɪst ækt]
恐怖主义行为：指为实现政治、宗教或其他目的，通过使用暴力、恐吓手段对无辜平民或政府设施进行攻击的行为。
the calculated use of violence (or threat of violence) against civilians in order to attain goals that are political or religious or ideological in nature; this is done through intimidation or coercion or instilling fear
同义词： terrorism / act of terrorism
The book focuses on a planned terrorist act and the detective work that was geared towards stopping it.
该书的重点，有计划的恐怖行为，检测工作正在朝着停止它为目标。
He gave brief televised remarks almost immediately, telling Russians that he believed the blast was a terrorist act.
他立马作了简短的电视讲话，告诉俄罗斯人，他相信这次爆炸是一次恐怖行动。
Earlier this year, an air crew foiled a woman's alleged effort to ignite a commercial aircraft in an apparent terrorist act, and the plane successfully made an emergency landing in western China.
今年早些时候，一架飞机上的乘务员挫败了一名女性通过引燃客机实施恐怖行为的企图，这架客机后来成功在中国西部紧急着陆。
Your committee is concerned that in not one single case of a trial that has taken place to date, have they actually been charged with a terrorist act.
VOA : standard.2009.04.09
Israel has said it has no doubt that the shooting was a terrorist act.
Deputy prosecutor-general Andrei Shved said the blast was a terrorist act, but did not give further details.
The analysts identified a pattern of radicalization and listed common characteristics before a person committed a terrorist act.