这本书追溯了电脑技术的发展历程。
This book traces the ___genealogy of computer technology.
他花了好几个月研究家族谱系，追溯到了16世纪的祖先。
He spent months studying ___genealogies and traced his ancestors back to the 16th century.
她正在研究家族族谱，追溯祖先的历史。
She is studying her family's ___genealogy to trace back their ancestors.
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