1·They paid a king's ransom for the painting.
他们花了一大笔钱购得那幅画。
2·That painting must be worth a king's ransom.
那幅画一定价值连城。
3·They do nothing but work and earn a king's ransom.
他们一门心思努力工作，然后获得报酬无数。
4·An emerald of that size, unflawed, would be worth a king's ransom.
一块那么大、而又无瑕疵的绿宝石会是价值连城的。