In 1960, a researcher named Jane Goodall began to live with and study wild chimpanzees in Africa.
1960年，一位名叫珍·古道尔的研究人员开始在非洲与野生黑猩猩一起生活并进行研究。
2
Years of observations by biologists Dian Fossey, who observed gorillas, and Jane Goodall, who worked with chimpanzees, could not prove that animals cry tears from emotion.