similarity of structure between organs or parts, possibly of dissimilar function, that are related by common descent.
同构发生, 同源发生源于同一祖先, 可能功能不同的器官或部分在结构上的相似
An inherent similarity between persons or things.
相似人或事物之间遗传上的相似之处
Having such a close similarity or resemblance as to be essentially equal or interchangeable.
可互换的十分类似或相象以至于本质上相等的或能互换的
