indispensableness

n. 不可缺少

例句与用法：

That water is indispensable to life is obvious.

很明显水对生命是必不可少的。

Air as well as sunlight be, needless to say, indispensable to our daily life.

不必说，空气象阳光一样，对我们的日常生活不可缺少。

Air is indispensable to life.

空气是生命所必需的东西。

Air, food and water are indispensable to life.

空气，食物，水皆为生命不可缺者。

词形变化：

副词: indispensably | 名词: indispensability |