family tree

例句：

1. 1. The family tree is a visual representation of the lineage of a family.
   家庭树是家庭血统的视觉表示。
2. 2.The genealogy expert traced the family tree back to its origins in Europe.
   基因学家追溯了家庭树的起源，发现它起源于欧洲。
3. 3. The family tree was carefully documented for future generations to learn about their ancestors.
   为了未来几代人了解他们的祖先，这个家庭树被仔细记录了下来。