Hybrid vigour is common in plants and is found in some animals-though, some speculate, it may be lacking in European royalty.

杂交优势通常在植物中非常普遍在一些动物中也有体现——不过有人猜测，在欧洲皇室中缺乏这种效应。

youdao

Hybrid vigour is common in plants and is found in some animals-though, some speculate, it may be lacking in European royalty.

杂交优势通常在植物中非常普遍在一些动物中也有体现——不过有人猜测，在欧洲皇室中缺乏这种效应。

youdao