fatal 
英 [ˈfeɪtəl]  美 [ˈfeɪtəl] 
adj. 致命的；无可挽回的；毁灭性的

例句：
His father had been in a fatal accident. 

他父亲出了一场致命的事故。

He'd been involved in a fatal drive-by shooting. 

他卷入了一起夺命飞车射击案。

A middle-aged man had a fatal heart attack. 

一名中年男子心脏病发作致死。

It would clearly be fatal for Europe to quarrel seriously with America. 

欧洲若与美国反目显然会有灾难性后果。

It would deal a fatal blow to his fading chances of success. 

这将给他日渐渺茫的成功机会予以毁灭性的一击。