Cotton subsidies, for example, may be less than US$5 billion a year, but they cost West Africancotton producers US$150 million a year – equal to about 10% of their total merchandise exports.
African countries face not only a limited cotton supply and poor machinery.
非洲国家面临的问题不仅仅是棉花供应有限和机械设备落后。
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One continuing obstacle: trade barriers maintained by wealthy industrial nations that penalize sectors, such as cotton, where African producers might succeed internationally.