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研究人员为这98种语言设计了一个词汇概念数据集，从中识别出了一组与农业相关的核心传承词汇，并绘制了一棵语言谱系树。
Archaeologist and study co-author Mark Hudson of the Max Planck Institute for the Science ofHuman History said the researchers examined data from 255 archaeological sites in China, Japan, the Korean peninsula and the Russia Far East, assessing similarities in artifactsincluding pottery, stone tools and plant and animal remains. They also factored in the dates of269 ancient crop remains from various sites.
该研究的合著者之一、来自马克斯·普朗克人类历史科学研究所的考古学家马克·哈德逊表示，研究人员研究了来自中国、日本、朝鲜半岛和俄罗斯远东地区的255个考古遗址的数据，从陶器、石制工具等人工制品和植物、动物遗迹中总结出相似性。他们还把各个遗址发掘的269种古代农作物的出产年代也结合起来分析。
The researchers determined that farmers in northeastern China eventually supplementedmillet with rice and wheat, an agricultural package that was transmitted when thesepopulations spread to the Korean peninsula by about 1300 BC and from there to Japan afterabout 1000 BC.
