Friday's attack was the first terrorist incident in the country in four years.

上周五的袭击是这个国家四年来的第一宗恐怖事件。

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Mr. Cameron called the killing "appalling, " saying there are strong indications it was a terrorist incident.

卡梅伦称这一事件“令人震惊”，他说有足够的迹象显示这是一起恐怖攻击行动。

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Not all of the families of the British victims are convinced that Abdel Basset al-Megrahi was responsible for the worst-ever terrorist incident on British soil.

VOA: standard.2009.08.21

TRIA, which offers a backstop to private insurers in the event of a terrorist incident on American soil.

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Yet none has been used in a terrorist incident so far, he said.

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"There are strong indications this is a terrorist incident, " said British Prime Minister David Cameron, who was on a trip to Paris.

WSJ: A Killing Puts U.K. on Guard for Terror