在熟悉的运输问题中，我们考虑几个工厂的供应和几个市场的需求的商品，我们也给出从工厂运输商品到市场的单位花费。这其中的经济学问题是：怎样安排运输使得我们的总运输成本最小？(In the familiar transportation problem, we consider the supply of several factories and the demand of several markets. We also give the unit cost of transporting goods from the factory to the market. One of the economic questions is: How to arrange transportation to minimize our total transportation costs?)