参考例句

1. Line of descent as traced through the maternal side of a family.

   母系家族（或家谱）从母亲一边追溯渊源的后代家系

2. The line of descent as traced through the paternal side of a family.

   父系按父方血统追溯的族系血缘关系

3. in a straight unbroken line of descent from parent to child.

   直接的未断开的从父母传到孩子的血统。

4. Belonging to or being in the direct line of descent from an ancestor.

   直系的属于或成为祖先的直系后代

5. line of descent traced through both the maternal and paternal sides of the family.

   追溯父系和母系双边的血统。

6. Derived from or relating to a particular line of descent ; hereditary.

   遗传性的从一特定的直系后代获得的或相联系的；遗传性的

7. group of genetically related organisms constituting a single step in the line of descent .

   遗传上相关的有机体群，在世系线上组成了单独的一步。

8. line of descent traced through one side of the family.

   追溯家庭某一方的血统。

9. An originator of a line of descent ;a precursor.

   前辈家族血脉的开始者；先驱

10. by an unbroken line of descent .

    通过完整的家族系谱。