ransom bill
 付贖保證書


 Ran·som n.
 1. The release of a captive, or of captured property, by payment of a consideration; redemption; as, prisoners hopeless of ransom.
 2. The money or price paid for the redemption of a prisoner, or for goods captured by an enemy; payment for freedom from restraint, penalty, or forfeit.
    Thy ransom paid, which man from death redeems.   --Milton.
    His captivity in Austria, and the heavy ransom he paid for his liberty.   --Sir J. Davies.
 3. O. Eng. Law A sum paid for the pardon of some great offense and the discharge of the offender; also, a fine paid in lieu of corporal punishment.
 Ransom bill Law, a war contract, valid by the law of nations, for the ransom of property captured at sea and its safe conduct into port.