An integrated system was founded through a combination of database, simulation and linear programming for selecting crops, cultivation strategies and machinery for a given farm.
将数据库、模拟及线性规划结合在一起，建立了一个同时选择农作物、作业方式及机器设备的软件系统。
The combination of this year's drought, global high food prices have forced families to conserve whatever crops they can - pushing people deeper into hunger and poverty.
乾旱与物价上涨，迫使家家户户尽可能节省开销，让他们陷入饥饿与贫穷的深渊。
The World food Program says people are suffering from a combination of factors, including high food prices, the global financial crisis, unemployment and recurrent poor food crops.
世界粮食计划署称，人们受到几个因素的共同影响，包括食物价格升高，全球金融危机，失业和粮食产量低的再次出现。
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