The sheep were cloned using a method called somatic cell nuclear transfer.

绵羊是使用一种称为体细胞核植的方法克隆的。

This process—somatic cell nuclear transfer—has been used for decades to duplicate livestock and pets.

这个过程——体细胞核植——几十年来一直被用来复制牲畜和宠物。

Then, they take the nucleus of a somatic cell, like a skin cell, from the thing they want to clone and insert it into the egg.

然，从想要克隆的东西中取出体细胞的细胞核， 如皮肤细胞，并将其插入卵子中。

The process of somatic cell nuclear transfer involves removing genetic material from the nucleus of a host egg cell and replacing it with the nucleus from adult cells.

体细胞核植的过程包括从宿主卵细胞的细胞核中除遗传物质，并用成年细胞的细胞核取而代之。