生死存亡的英文：
[Literal Meaning]
life/death/existence/extinction
(grave crisis between) life and death
[解释]
生存或者死亡。形容局势或斗争的发展已到最后关头。
[Explanation]
life and death
[例子]
农民起义军的势头越来越大，明朝已经到了生死存亡的关头。
[Example]
The power of the peasant rebels grew stronger and stronger, and the Ming Dynasty was at the moment of life and death.
- It was as if the public and Congress felt the national peril instinctively and created a surrogate center.
好象公众和国会都本能地感受到国家的生死存亡，因而设立起一个代理中心。 - That is a critical moment.
那是生死存亡的关头。