磨坊主的女儿必须猜出小精灵的名字Rumpelstiltskin，否则就得放弃她的第一个孩子。

The miller's daughter had to guess the imp's name ___Rumpelstiltskin or give up her firstborn child.

每次修改设计稿时，我们的客户就会变成真正的纺纱侏儒（指脾气暴躁、难以取悦）。

Our client becomes a real ___Rumpelstiltskin every time we revise the design drafts.