The deepness of a voice is not an accurate guide to whether someone is muscular or weedy. Instead, people rely on a subconscious, mysterious 'x-factor' in the voice to work out someone's physique.

　　然而声音的低沉程度并不是判别一个人肌肉结实或者瘦弱的标准，实际上人们依靠着直觉--声音里一种未知的因素来总结出一个人的结实程度。

　　Dr Aaron Sell, of the University of California, Santa Barbara, believes the ability to assess strength from voices evolved to help our ancestors avoid picking fights they were likely to lose.

　　美国加州圣巴巴拉大学的阿隆赛尔博士相信我们的祖先演化出这种依靠声音判断力量强弱的本能，以此来避免卷入对自己很可能不利的争斗。