这是一次关乎美国生死存亡的重大历史事件。的翻译：It is about United States the very existence of a significant historical event. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

This is the first major historical events that relate to American life and death.

It is about United States the very existence of a significant historical event.

This is one time concerns the US life and death the significant historical event.

This is a gateway to the United States death or survival of important historical events.

It is about United States the very existence of a significant historical event.