ransom

赎回，赎；勒索赎金；救赎；得赎金后释放英释中释vIf you ransom someone who has been kidnapped, you pay the money to set them free

赎金；赎身，赎回英释中释nan amount of money that is paid to free someone who is held as a prisoner

1 a king's ransom,◎作为被俘国王赎金的巨款

1 The same system was used for ransoming or exchanging captives..同一系统也被用来赎回或交换俘虏。