Pronunciation ChallengeIs it really that bad to marry my cousin? | Am I Normal? with Mona Chalabi

One study looking at millions of genealogy profiles concluded that between 1650 and 1850, the average person was fourth cousins with their spouse.

分析百萬個家譜檔案的一項研究總結，西元1650到1850年間，平均每人和其伴侶是追朔好幾代的表親關係。