life-and-death 是什么意思

	adj. 生死攸关的，极重要的。

vitally important; "a life-and-death struggle"
同义词：life-or-death,

	1.	A principle is involved, a life-and-death principle which is repeatedly and thoughtlessly violated . 这牵涉到一条原则，一条一再被无情地违犯的生死攸关的原则。
	2.	One problem that gave the war department continuing concern was that of securing practical battlefield experience for portions of the army before the whole of it should finally be thrown into a life-and-death struggle . 陆军部经常注意的一个问题，是在全部陆军生死斗争之前，搜集一部分陆军的实战经验。

life-and-death是什么意思