adj.不可缺少的;绝对必要的;责无旁贷的;不可避开的;
例句:
This is an indispensable part of his creed.
这是他的信条中必不可少的一部分.
So, it is indispensable to investigate thoroughly the three dimensional viscous flow through the turbine.
为此, 对水轮机内部流动状况进行三维粘性流动数值解析是非常必要的.
Starch is indispensable to life.
淀粉对生命是不可或缺的.