短语词组短語Senior Secured Debt 優先支付的有擔保債務senior r debt 優先債務Senior Subordinated Debt 高級附屬債務senior unsecured debt 優先無擔保債券;優先支付的無擔保債務;債務senior unsecured debt rating 無擔保債務評級senior debt securities 票據屬於優先債券 返回 senior debt