政府必须合作，如果他们要打击国际恐怖主义。

Governments must cooperate if they are to fight international ___terrorism.

这次炸弹爆炸是意大利近年来经历的最严重的恐怖主义行为之一。

The bomb explosion was one of the worst acts of ___terrorism that Italy has experienced in recent years.

为政治目的使用暴力，例如在公共场所放置炸弹，是恐怖主义的一个明显例子。

Using violence for political purposes, such as planting bombs in public places, is a clear example of ___terrorism.