What we see today is the product of evolutionary events resulting from the dispersal of a few human populations out of Africa around 60, 000 to 70, 000 years ago.
2019年6月六级真题(第一套)听力 Section C
柯林斯高阶英汉双解学习词典释义
N-UNCOUNT
散开;散布;传播
Dispersal is the spreading of things over a wide area.