First, the weapons should be intended for use only in retaliation after a nuclear attack. Second, the possession of the weapons must be a temporary expedient.

首先，这些武器应当只在遭受核袭击后反击时才使用。其次，这些武器的拥有必须是一种临时的应急手段。

《柯林斯英汉双解大词典》

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。

youdao

While critics of the CA system have long feared that such an attack could be possible, this is the first time such an attack has been seen "in the wild".

尽管电子认证系统的批评者们已经长时间担心攻击的可能性，这还是第一次“在自然环境中”发生这种攻击。

youdao

She was shot through the brain. Police believe she was the main target of the attack -- the first shooting of a member of Congress in more than thirty years.

VOA: special.2011.01.15

Russian officials say this bombing was the first deadly terrorist attack in Russia outside of the North Caucasus in five years.

VOA: standard.2009.12.12

Hamilton's Dougie Imrie flighted in an early ball to the back post in the first decent attack of the match, but none of his team-mates were on hand to convert and it was safely knocked out for a corner by Alan Maybury.

BBC: Sport - Football - Hamilton 1-2 St Johnstone

The diplomat, Gregory Hicks, testified as a whistleblower, criticizing administration statements in the first days after the attack that it had grown out of a demonstration.

WSJ: GOP Probes Deeper Into Benghazi Review

Lacking the calming influences of Fabregas and Robin van Persie, the hosts were forced to play largely on the counter-attack in the first half and the home supporters were soon murmuring in frustration.

BBC: Arsenal 0-0 Sunderland