EndorseTo sign a contract indicating approval of the terms and conditions of the contract. Also referred as acceptance of risk for debt issuance. Commercial Paper（CP）Short term debt issued by a large company in their own name. CP is generally unsecured （has no security）. Also called promissory notes. DiscountThe price of a bill of exchange after interest has been deducted. Interest accumulates until maturity.RolloverThe process of repaying one bill by issuing another bill for a similar term. Also, the movement of money from one investment to another. 背书在合同上签字，表明同意合同中的条件。即承担债务发行的风险。 商业汇票大公司以自己的名义发行的短期债务。商业发票一般无安全保障（无抵押）。 贴现汇票扣除利息后的价格。利息累积到期限结束。展期通过发行类似期限的新票据来偿还旧票据。也指资金从一个投资项目流到另一个投资项目。