But scientists at DelawareStateUniversity have found that an ancient method of fertilizing soil may help.
不过特拉华大学的科学家们发现一种古老的方式或许对增加土壤肥沃有效。
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Amir earned an MBA from the University of Delaware, Masters of Science from Georgia StateUniversity and a Bachelors of Science Degree in Industrial Engineering from the University of Iran.