用作定语
▲～+n.
You can make an arbitrary choice.你可以随便做选择。
A good judge does not make arbitrary decisions.一个优秀的法官不会做武断的决定。
He makes unpredictable, arbitrary decisions.他做的决定难以预料，主观武断。
It is difficult to discern the motive of this seemingly arbitrary attack.这种看上去随心所欲的攻击很难看出其动机。
She made an arbitrary choice of the black shoes instead of the brown ones.她心血来潮地选了那双黑色的而不是棕色的鞋。
This is a country where arbitrary arrests are commonplace.在这个国家里，公民遭到肆意逮捕是司空见惯的事。
用作表语
▲S+be+～
I didn't know anything about any of the books so my choice was quite arbitrary.对那些书我一点儿也不了解，所以我只是随意选了一些。
Our decision to go to Italy this summer rather than Spain was quite arbitrary.我们只是一时随心所欲地决定今夏去意大利而不去西班牙的。
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。
The selection of the 100 participants was completely arbitrary.对100个参加者的选择完全是随意的。
His conduct appears to have been arbitrary and harsh.看来他的领导方式一向霸道粗暴。
