subrogation　

subrogation　取代债权　

Substitution of one party（called the subrosee）for another（called the subrosor）as a creditor or possessor of a legal right.Upon subrogation，the subrosee acquires the claims，interests，ownership，remedies，or securities of the subrosor.In cases where a party pays for the debts of another party，the paying party becomes entitled to the rights belonging to the debtor.