Warawoot Benjjaputtarog, the deputy managing director at GT Wealth Management, an investment firm that runs such seminars, says education is important for those who are shifting from gold bullion or jewelry to sophisticated futures contracts.

VOA: standard.2010.07.21

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

We also have standardized contracts that are traded on exchanges and they're called futures contracts.

也有在交易所中交易的,标准化合同,它们被称做期货合约

耶鲁公开课 - 金融市场课程节选