祖宗的用法和样例：
例句
-
骡子既无足以自豪的祖宗，亦无可以寄托希望的子孙。
A mule have neither pride of ancestry nor hope of posterity. -
小人大言不惭，简直把自己的祖宗也说成是他们生的了。
Snob talk as if they have beget their own ancestors. -
嫡堂（或嫡表）兄（或姐，弟，妹）与他们共同的祖宗源自两个支系
First cousins are two degrees from their common ancestor.
