Very forceful emotions from the depth of one's own being can feel like an attack on the self and the more dangerous emotions can appear to be a matter of life or death.

内心强烈的情感不但攻击自我，更加危险情绪表现则是涉及到生存与死亡的问题。

The developing world is the most vulnerable to environmental threats and they even take it more seriously than many developed countries as that is a matter of life or death to them.

发展中国家抵御环境污染的能力是最弱的，他们对待这一问题比许多发达国家还要认真，因为这关系到生死存亡。

The pain of beingrejected by one’s peer group can be a matter of life or death, asrecent cyber-bullying cases in the news demonstrate.

被同龄人群体抛弃的痛苦是如同生死一般的，就像最近新闻中报道的网路霸凌*一样。

He had lived all his life in desert where every cupful of water might be a matter of life or death.

他一直生活在沙漠里。在这种地方，每一杯水都关系到他的生死存亡。

It had become a matter of life or death for him.

这是身家性命交关的事儿!