It is, however, strictly endogamous.

但是，它严格族通婚。

And 9. That there is a reason to think that some endogamous tribes became endogamous in this manner.

进而，9、那就有了一个理由认为一些内婚部落以这种方式转向内婚。

In a word, the matter appears simple and natural as soon as we abandon the extraordinary conception of the endogamous Roman gens and regard it, with Morgan, as originally exogamous.

一句话，只要我们抛弃罗马氏族实行内婚制的奇怪观念，而同摩尔根一起承认它最初是实行外婚制的氏族，那么问题就很简单而不言自明了。