The economies of most of the least developed countries depended on commodities, the prices of which were subject to catastrophic variations which, in some cases, had reached levels which were unprecedented over the past 20 years.
多数最不发达国家的经济依赖农产品，其价格会发生灾难性变化，在一些情况下，价格之低已达到过去二十年前所未有的水平。