adj.随意的,任性的,随心所欲的,主观的,武断的,霸道的,专制的,专横的,独断独行的,乱
The choice of players for the team seemed completely arbitrary.
看来这个队的队员完全是随意选定的。
A good judge does not make arbitrary decisions.
一个优秀的法官不会作武断的判决.
You can make an arbitrary choice.
你可以随便做选择.