The Imbat Ket were originally divided into two exogamous phratries which exchanged marriage partners.

印八偈人原本分为两个交换配偶的异族通婚的氏族。

He did not by any means discover the existence of exogamous groups; still less did he understand them.

他根本没有发现外婚制集团存在的事实，也完全没有理解这个事实。

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。