Despite their efforts, the difficulties were enormous for the weakest and least developed countries and for middle-income countries which were dependent on the export of manufactured products, agricultural goods and commodities and were penalized by falling prices and rising tariffs.
尽管做出这些努力，最不发达国家和中间收入国家的困难重重，它们必须依赖制成品、农产品和商品的出口，并受到价格下降和关税升级的打击。