一份2009年的世界银行的报告指出，通过增加土壤的肥沃度，一次典型的洪水在其发生的次年会增加农业产出(虽然在其发生当年产出下降)。
A 2009 World Bank study found that by increasing soil fertility, a typical flood increases agricultural output in the year after it strikes (though output falls in the year it occurs).
一份2009年的世界银行的报告指出，通过增加土壤的肥沃度，一次典型的洪水在其发生的次年会增加农业产出(虽然在其发生当年产出下降)。
A 2009 World Bank study found that by increasing soil fertility, a typical flood increases agricultural output in the year after it strikes (though output falls in the year it occurs).
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