研究的首要发现便是大部分多子女的婚姻都发生在远房表兄妹之间。

The study's principal finding is that the most fecund marriages are between distant cousins.

youdao

研究的首要发现便是大部分多子女的婚姻都发生在远房表兄妹之间。

The study's principal finding is that the most fecund marriages are between distant cousins.

youdao