ancestor

My ancestors immigrated from a small coastal village in Italy three generations ago.

(Chinese) 三代以前，我的祖先从意大利一个沿海小村庄移民过来。

Scientists believe that modern birds are the direct descendants of feathered dinosaur ancestors.

(Chinese) 科学家认为，现代鸟类是有羽毛恐龙祖先的直接后代。