the study humans prior to the invention of writing
同义词:protoanthropology
protohistory详细解释
pro.to.his.to.ry n.(名词)The study of a culture just before the time of its earliest recorded history.史前历史学:对有最早文字记载历史时期以前的文化的研究 【引伸】 pro.tohistor.ian pro.tohistor.ic