Well, the need to avoid these huge risks and tremendous losses led to the birth of the futures market, and the underlying system of grading grain and receipting -- issuing warehouse receipts on the basis of which trade could be done.
人民需要避免这种极高的风险和重大的损失 催生出了期货市场， 而谷物的分级和验收的根本制度——签发仓库收据 建立在完成交易的基础至上。