The futures contracts were invented in Japan in the 1600s at Osaka and they were developed for the rice market in Japan.

期货交易合同发明于,16世纪的日本大阪,并在日本的大米市场得到发展

耶鲁公开课 - 金融市场课程节选

they tend to prefer to bring people on for short-term contracts,

他们都通常喜欢雇佣短期合同工，

英国的影视产业 - SpeakingMax英语口语达人

It says the price index contained this amount of beef, this amount of sheep wool, this amount of sole leather, and this amount of corn; that was the first consumer price index ever used for financial contracts.

指数中包括这些数量的牛肉,这些数量的羊毛,这些数量的鞋底皮,这些数量的玉米,这是在金融合约里出现的,第一个消费者物价指数

耶鲁公开课 - 金融市场课程节选

The reason the mafia thrives in countries where it's hard to write legal contracts-- let's say some new parts of the former Soviet Union or some parts of Africa the reason the mafia thrives in those environments, is that it substitutes for the law and enforces both legal and illegal contracts.

黑恶势力在那些,书面协议不受保护国家不断壮大,比如前苏联新成员国 或者非洲,为什么黑恶势力在这些地方发展壮大,因为这是法律强制力的补充,它维系所有合同,不管是不是合法的

耶鲁公开课 - 博弈论课程节选