defeasance structures带有废止条款的结构
defeasance detail毁约条款
in-substance defeasance视同清偿
defeasance e structures带有废止条款的结构
defeasance of insurance contract保险合同失效
defeasance of deeds契约作废
N（名词） the act or process of rendering null and void; annulment 废除; 无效 [法律]