【英语高人进来****甚为感谢!

题目

【英语高人进来****甚为感谢!
Unlike other arachnids,which have their nerve cells evenly distributed along their body,the scorpion has a cluster of nerve cells in its head,as a mammal does.
【我的粗糙翻译】可不像蜘蛛纲动物那个神经细胞平稳分布在身体上,蝎子的话,神经簇是分布在脑袋里的,就像哺乳纲动物那样!
【】我的疑问】：句中のbody,我个人的理解里面,我觉得用bodies更好,就是要用他的复数啊!这样,还能与【their nerve cells】对应起来,个人觉得蛮好!可是,遗憾的是,书本里说单数是对的,body就是强调一个整体概念.

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