从1831年至1836年,达尔文乘英国皇家海军舰艇“贝格尔”号作环球考察。一次,在非洲,他访问了一个边远的原始部落。这里的人群竟还过着十足原始的生活,住的是山洞或树窝,吃的是野果和捕获的禽兽,甚至“茹毛饮血”习以为常,也没有衣服穿……这种边远人群的生活方 From 1831 to 1836, Darwin took a global tour of the British Royal Navy ship “Beagle”. Once in Africa, he visited a remote primitive tribe. The crowd here still lived a full primitive life. They lived in caves or tree nests. They ate wild fruits and captured beasts. They even took the habit of drinking blood, and they did not wear clothes.... The life of such outlying people.