所谓“或有商品”是指在阿罗-德布鲁范式中建立模型的基本概念。一种对交换的商品不能对其物质形态做出准确的描述,无法对商品的划分做出可以看见的、但可通过交换能够提高当事人的满足程度的配置的商品,就叫做或有商品。
衍生工具就是一种金融工具,其价值取决于基础工具的价格,比如货币、商品或有价证券。
A derivative is a financial instrument whose value depends on the price of an underlying instrument, such as currencies, commodities or securities.
有些二手商品非常劣质,或有些根本就是从无良商家那里买来的伪劣产品。
Some of the second-hand products are of inferior quality or just fake goods that are brought from the unscrupulous businessmen.
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