But inbreeding was a big problem on the island and the population is dying out.

但在个岛上，近亲结婚是个大问题，人口也正在衰减。

And their intermarrying has made them different from other folks around here.

而且他们的近亲结婚已经使他们一带其他的人不一样了。

Marriage between cousins is common in Pakistan, and such inbreeding leads to a high incidence of genetic disorders.

近亲结婚在巴基斯坦很普遍，而种近亲交配引发遗性疾病的发病率很高。

It was whispered in Vienna that the heir was clinically insane, that his family's inbreeding had caught up with him.

维也纳有，位继承人被诊断为精神失常，他的家族近亲结婚害了他。

The only downside to living in this way is that you'd have to reproduce with your cousin or aunt whichever you prefer really.

样生存的唯一劣势是需要近亲结婚。

Darwin glumly suspected that certain physical and mental frailties among his children arose from a lack of diversity in his family tree.

他怀疑出现在他孩子身上的某些生理和精神方面的问题，一定是由于近亲结婚所致。

As these mutations are extremely rare, they tend only to appear in consanguineous relationships where close families intermarry.

由于些突极为罕见，它们通常只出现在近亲结婚的家庭中。

The Wilkes are fine folks in their way, and you know I'm fond of them all, but be frank! They are overbred and inbred too, aren't they?

威尔克斯家就他们为人来都是些好人，而且你也知道我很喜欢他们，可是让我们坦白吧！他们吠讲究教养，也太爱搞近亲结婚了。