随意性的英文：
randomness

An unintended electric arc,as between two pieces of apparatus.
飞弧如在两块器械之间产生的一道随意性的电弧

It would be unfair to claim that calculation of model stars inherently contains an element of arbitrariness.
认为恒星模型的计算必然带有某种主观随意性是不公正的。

mode of random variables
随机变量的众数

do random, unplanned work or activities.
胡乱地做一些无计划的工作或活动。

The computer will generate apparently random numbers.
电脑似乎将随机产生号码。

Chose a card at random from the deck.
从一副牌中任意选出一张。

A measure of the disorder or randomness in a closed system.
随机计量单位在封闭体系中对无序和随机的计量单位。