有or后缀的单词5个

　　例句：

　　Many species have diverged from a single ancestor.

　　许多物种都是同宗演变而来的。

　　The ancestor of the modern bicycle was called a penny-farthing.

　　现代自行车的原型称作penny-farthing（一种前轮大后轮小的自行车）。

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

　　我们现今可以说，这间大学的直系祖先是柏拉图学院的柏拉图式共和国。

　　Explorer Roy Chapman Andrews argued at the time that the whale must be a throwback to a land-living ancestor.

　　探险家罗伊·查普曼·安德鲁斯当时认为，鲸鱼一定是一种返祖的陆地生物。