祖先(そせん)ancestor

人類(じんるい)の祖先(そせん)は猿(さる)です。

The ancestors of mankind are monkeys. {ancestor}

私(わたし)の祖先(そせん)は武士(ぶし)だった。

My ancestors were samurai. {ancestor}

祖先(そせん)のお墓(はか)の前(まえ)で祖先(そせん)の事(こと)を考(かんが)える。

Thinking about my ancestors in front of their graves. {ancestor}

何(なん)年(ねん)も遡(さかのぼ)ると、イヌの祖先(そせん)はオオカミにあたるのだとか。

Going back many years, it is said that the ancestors of dogs were wolves. {ancestor}

祖先(そせん)がどのようにして命(いのち)を繋(つな)いできたのかが気(き)になってならない。

I can't stop wondering how our ancestors managed to sustain their lives. {ancestor}