直系的

They were the direct descendants of the Dutch settlers.

他们是荷兰移民直系裔。

Shakespeare's last direct descendant.

莎士比亚直系裔。

The 23 million-year-old creature was not a direct ancestor of today's seals, sea lions and walruses, a group known collectively as pinnipeds.

这只2300万年生物并不是如今豹、狮和象直系祖先，而是来自另一个支。