It should not be an arbitrary decision.

这不应该是一个任意的决定。

It is not merely an arbitrary decision of theirs, come to without reason'.

这不仅仅是他们的任意决定， 没有理由” 。

The force of the stronger argument is sometimes ignored and due process replaced by an arbitrary decision.

更有说服力的论点有时会被忽视， 正当程序会被武断的决定所取代。