VOA慢速英语:研究人员发现了新人类物种的证据

fossil – n. part of an animal or plant from thousands of years ago, preserved in rock

previously – adv. before the present time

province – n. division of a country that has its own government

characteristic – n. quality that makes something different from other things

descend – v. develop from an ancestral heritage

evolve – v.develop from other forms of life over many of years