A hen is the egg's machine of reproducing itself.

母鸡是下蛋的机器，这个机器是用来复制自己的。

youdao

Delvoye is no stranger to controversy: he is perhaps best known for his work Cloaca, an installation composed of a large machine reproducing the effects of the human digestive system to create, in essence, industrial faecal matter .

BBC: Controversy at the classical Louvre