So, the goldsmith would sign his name on it saying, I promise to give so many ounces of gold.

所以这个金匠会在票据上签名,保证归还多少盎司的金子

耶鲁公开课 - 金融市场课程节选

Suppose you are a naive investor and you say, okay I'm going to invest in companies' paper, which is their promise to pay --their IOU.

假如你是一个菜鸟投资者,想投资于这些公司的债券,债券就是他们的偿还凭证或者说欠条

耶鲁公开课 - 金融市场课程节选

Yet despite the false starts, and the trials, and the years of famine, and the childlessness, and the infertility, the seed of Abraham survives, and the promise is reiterated: "I will go down myself with you to Egypt, and I myself will also bring you back."

但尽管有错误的开始，试验和多年饥荒，断子绝孙和贫瘠，亚伯拉罕的子孙还是得以幸免，许诺被重新申明：,“我要和你同下埃及去，也必定带你上来“

耶鲁公开课 - 旧约导论课程节选