That painting must be worth a king's ransom.
那幅画一定价值连城.
The dam held the floodwaters. Thieves held the stolen painting for ransom.
水库控制着洪水。小偷用偷来的画索取赎金
You are our prisoner now and we won't release you until a ransom is paid.
你现已遭我们禁锢, 要到交出赎金以後, 才能放你走.
