He was killing himself laughing.

他笑得前仰后合。

《牛津词典》

He wrote letters about killing himself and saying that he was the "most miserable man alive."

VOA: special.2009.02.09

And proceeds to do the only thing he can do to defend himself against Hal, which is shut down the program, basically killing-- if we can talk that way--killing Hal.

而他唯一,能使让哈尔不伤害到自己的举措,就是关闭该程序,基本上也就是杀死,如果我们可以那样表达的话,杀死哈尔

耶鲁公开课 - 死亡课程节选

He considered killing himself.

VOA: special.2010.05.30

It heard two Taser stun guns were fired at Moat in an attempt to stop him killing himself.

BBC: 'I wish Raoul Moat was alive,' says victim's sister

The police said Mr Venner had made no statement before killing himself, although a note was found next to his body.

BBC: Man kills himself inside Notre-Dame cathedral in Paris

Failures by care professionals led to a 70-year-old man strangling his wife before killing himself, an investigation has found.

BBC: Care failures led to Wigan couple's deaths