Some other experts say that the ancestor of the modern guitar was brought to Spain from Persia sometime in the twelfth century.

VOA: special.2010.05.12

We can say today that this university is a direct ancestor of the platonic republic of Plato's Academy.

我们可以说现今这间大学的直系原型,即是，“柏拉图学院“的,柏拉图式理想国。

耶鲁公开课 - 政治哲学导论课程节选

Aristotle is considered the ancestor of the varying sorts of thought about form, and it's this move, this move that he makes in the Poetics, that engenders this possibility.

亚里士多德称得上是对形式的多元思考之父,正是他所做的，和在《诗学》书中所提到的，使这一切成为可能。

耶鲁公开课 - 文学理论导论课程节选

Rebecca Skloot says she hopes that scientific companies that have gained from HeLa cells will give back to the family whose ancestor changed the history of medicine.

VOA: special.2010.07.21

So how are we to account for the diversification of languages, the spread of different ethnic linguistic groups throughout the lands of the earth if we all come from one common creative moment, one common ancestor?

所以，如果我们都起源于同一个时刻，来源于,同一个祖先，那又要怎样解释语言的多样性，怎样解释,使用不同语言的族群遍布地球上的所有土地,这一现象呢？

耶鲁公开课 - 旧约导论课程节选

That's how long it took for an international team of scientists to excavate and analyze the fossilized skeleton of a 4.4 million year old human ancestor, Ardipithecus ramidus, which was discovered in Ethiopia.

VOA: standard.2009.12.24