下手对象不是随便选择的。用英语怎么说？

下手对象不是随便选择的。

The victims were not chosen arbitrarily.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

victims

n. 牺牲者( victim的名词复数 )，牺牲品，受骗者，为祭祀杀死的动物（或人）；

例句
Officials admit the actual number of AIDS victims is much higher than statistics reflect.
官员们承认艾滋病患者的实际数量比统计所显示的数字要大得多。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

not

adv. 不，[用以表示否定、否认、拒绝、禁止等]不是，几乎不，未必，没有[用于否定后面的词或短语]；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

chosen

adj. 挑选出来的，精选的，<宗>上帝所选的；v. 挑选( choose的过去分词 )，选择，选定，喜欢；

例句
Some of the organisations taking part protested that the delegates they had chosen were not being accredited.
一些参加的组织抗议他们所选出的代表未获委任。

arbitrarily

adv. 任意地，武断地，反复无常地，肆意地；

例句
We might arbitrarily assume for each of the three register specifications.
对于三个寄存器我们可以随意假定每种寄存器规定的动作.