2017年12月英语四级翻译题库：疼痛

　　请将下面这段话翻译成英文：

　　一般来说，参与人体痛觉经历的神经组织至少在哺乳类动物身上都可以找到，这并不令人惊讶，因为疼痛是一种对潜在危险刺激的反应，从而具有使动物生存下去的重要的生物学意义。那么，在动物拥有所有必要的神经结构的情况下，我们有什么理由认为它们不能感受疼痛呢?那种认为动物不能感受疼痛的看法似乎认定动物和人在精神生活中存在本质的区别。

　　参考翻译:

　　Basically, all the nervous elements which underlie the experience of pain by human beings are to be found in all mammalian vertebrates at least; this is hardly surprising as pain is a response to a potentially harmful stimulus and is therefore of great biological importance for survival. Is there any reason, for supposing that animals, though equipped with all the necessary neurological structures, do not experience pain? Such a view would seem to presuppose a profound qualitative difference in the mental life of animals and men.