The term cat's paw has come into use.

这就是“猫爪子”（被利用的人）这一说法的来历。

She's actually a cat's paw for her boyfriend, poor girl.

实际上她只是她男朋友的工具而已，可怜的孩子。

It is easy for him to be used as a cat's paw of evil-doing.

他很容易就被人利用，成为别人为非作歹的工具。

It is plain enough that she has just made a cat's paw of you.

很显然她只不过是利用你作为她的工具。

Fancy his surprise when he saw that it was not a hand, but a cat's paw.

诸位想象一下当他发现看见的是一只猫爪而不是人手时有多么惊奇吧。

The stupid fellow never realized that he was a mere cat's paw in the hands of his enemy.

这个笨蛋根本不知道他只不过是敌人手中一个被利用的工具。

One of them tried to put his hand in my mouth and I bit it off and spat it out; but it wasn't a hand, it was a cat's paw.

一个杀人强盗想把手伸进我的嘴巴。我一口咬下他的手，把它吐出来。可吐出来的不是手，是一只猫爪子。