Looking from the backgrounds of public-private partnerships, the relationship between the third person and the agency is the civil contractbond.
从公私合作的背景来看，第三人与行政机关之间是民事合同关系。
2
For the T-bondcontract, any Treasure bond that has at least 15 years to the nearest call date or to maturity (if non-callable) can be used for delivery.
对于国债期货，任何距最近的赎回日或到期日（假如不可赎回）长达至少15年的国债可用于交割。
3
A CDS is just a contract between a buyer, who pays a premium, and a seller, who will make a payment to the buyer if a bond default occurs.