genealogist

The genealogist traced our family tree back to the 17th century.

用法提示：名词 genealogist 作主语，指从事家谱研究的专家。

My aunt hired a genealogist to find out more about our ancestors.

用法提示：名词 genealogist 作宾语，表示被雇佣的专业人士。

Genealogists often use DNA testing to confirm family connections.

用法提示：复数名词 genealogists 作主语，泛指这一领域的专家。