必不可少的用法和樣例：
例句
-
這些條件是良好的關係必不可少的。
These requirements are absolutely basic to a good relationship. -
很明顯水對生命是必不可少的。
That water is indispensable to life is obvious. -
不可少的，助奏的不可缺的；必不可少的。用作曲子不可少的伴奏
Not to be left out; indispensable. Used of an accompaniment that is an integral part of a piece. -
金錢對於幸福是必不可少的嗎？
Is money essential to happiness? -
食物對生命是必不可少的。
Food is essential to life.
