历年六级阅读理解逐句翻译：2006年12月一、In a purely biological sense, fear begins with the bodys system for reacting to things that can harm us - the so-called fight-or-flight response. 从纯生物角度来说，恐惧始于人体系统对会伤害我们的事情的反应-即所谓的“战斗或逃脱”反应。An animal that cant detect danger cant stay alive, says Joseph LeDoux. Like animals, humans evolved with an elaborate mechanism for about potential threats.“不能觉察到危险的动物无法生存”Jeseph LeDoux。像动物一样，人类进化过程中形成了一个精巧的机制，以处理潜在威胁的信息。At its core is a cluster of neurons
