New products sell well in domestic and foreign markets and export many countries and regions.

推陈出新的产品畅销国内外市场，出口多个国家和地区。

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Fish is also the world's most widely traded foodstuff and a key source of export earnings for many poorer countries.

鱼品也是世界上交易最广的食品，而且是许多较贫穷国家出口收入的一个主要来源。

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In many African countries, agriculture remains the principal economic activity, and agricultural products are the principal source of export trade.

在许多非洲国家，农业仍是主要的经济活动，农产品是主要的出口贸易产品。

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Farmers are also concerned about damage to the export trade as many countries, such as the US, will not allow imports of vaccinated meat and livestock.

BBC: Fresh calls for farm virus vaccination

Second, many countries that export to the United States (especially Asian ones) price their goods in dollars.

ECONOMIST: Why America's deficit is hard to turn around

And how many other countries also export those products?

ECONOMIST: Economics focus: Diversity training | The