The investors promise a lot: new seeds, new marketing, better jobs, schools, clinics and roads. An official at Sudan's agriculture ministry said investment in farming in his country by Arab states would rise almost tenfold from $700m in 2007 to a forecast $7.5 billion in 2010. That would be half of all investment in the country, he said. In 2007, agricultural investment had been a mere 3% of the total.
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种子有一层外壳，包裹着新植物的遗传物质，外壳内部是集中的营养供应。
The seed has an outer coating that surrounds the genetic material of the new plant, and inside this covering is a concentrated supply of nutrients.
有时，由于恶劣天气或疾病，植物无法在一个国家生长，因此农民需要新的种子。
Sometimes plants can't grow in a country because of bad weather or disease, so farmers need new seeds.
种子会长成新的植物。
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