相信大家都看過莎士比亞的《威尼斯商人》。這里就不加以介紹。one's pound of flesh 比喻 to insist cruelly on repayment of what was borrowed,常用在 have,demand,exact,want,ask for 等之后。
eg:If you borrow from the scoundredl,you may be sure he'll demand hhis pound of flesh.
Their boss pays the highest wages,but he wants his pound of flesh in return and makes them work very hard.