undefinable meaning in Chinese

不能确定的

It is undefinable as a passion .
它作为一种激情是无法加以解说的。
Just look at their counterparts in other countries , they would say . for survival and success , the media out there would balk at nothing and resort to everything , with products representing a wide spectrum of contents and styles , ranging from the radical red through the sensational yellow and undefinable grey down to the dubious black
你看人家的媒体,为了竞争和生存,出尽法宝,花招百出,动不动就给你“颜色”红的黄的灰的和黑的都有,相比之下,我们的确是逊“色”多了。
And through the undefinable , mysterious link that maintains through a whole army the same temper , called the spirit of the army , and constituting the chief sinew of war , kutuzovs words , his order for the battle next day , were transmitted instantaneously from one end of the army to the other
有一种不可捉摸的神秘的链条，它使全军同心同德，并构成战争的主要神经，这就是被称为士气的东西，库图佐夫的话和他所下的第二天进攻的命令，就是沿着这条链子传遍全军每个角落的。