terrorism

各国政府必须合作，共同打击国际恐怖主义。

Governments must work together to fight international ___terrorism.

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.