短语词组短语Senior Secured Debt 优先支付的有担保债务senior r debt 优先债务Senior Subordinated Debt 高级附属债务senior unsecured debt 优先无担保债券;优先支付的无担保债务;债务senior unsecured debt rating 无担保债务评级senior debt securities 票据属于优先债券 返回 senior debt