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- 问题详情：Food-securitychallengeswillnotbemetbysimplyincreasingprimaryproduction.ManymostlypoorpeoplelivingindevelopingcountriesdoneedmorecaJoriesandnutrients,andincreasesinproductionarerequiredtosatisfythisneed.Butasignificantproportionofthesepeoplear...
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