VOA慢速英语:Scientists Find Most Ancient Evidence of War

Stone Age – n. the oldest period in which human beings are known to have existed: the age during which humans made and used stone tools

club – n. a heavy usually wooden stick that is used as a weapon​

blade – n. the flat sharp part of a weapon or tool that is used for cutting​

paleoanthropologist – n. a researcher of the origins and predecessors of the present human species, using fossils and other remains​

brutal – adj. extremely cruel​

nomadic – adj. of, or relating to, a group of people who move from place to place instead of living in one place all the time