But what was credible, what is biological and scientific fact, is that we all stem from Africa -- in fact, from a woman called Mitochondrial Eve who lived 160,000 years ago.
可以相信的 以及生物学和科学事实 就是我们都起源于非洲 实际上，起源于一个叫做线粒体夏娃的女人 她生活在十六万年前