经济领域可以分为生产领域和流通领域两部分。商品价值是在生产领域形成的,而商品价值的实现却在流通领域,商品价值能否实现,商品能否成功地完成“惊险的跳跃”,又受流通领域购销矛盾的制约,因为购销是流通领域的主体及其存在的前提,怎样购,即是怎样使商品尽快地以最佳途径、最小费用开支从生产领域进入流通领域;怎样销,则怎样让商品尽快地走向流通领域,实现其使用价值。流通领域的购销是一对矛盾整体,它们相互依存,相互制约,相互发展。购是销的条件,销是购的结 The economic field can be divided into two parts: production and circulation. Commodity value is formed in the field of production, while the realization of commodity value is in the circulation field. Whether the commodity value can be realized or not, whether the commodity can successfully complete the “thrilling jump” is also constrained by the contradiction between purchasing and selling in the circulation field, because the purchase and sale are in circulation. The main body of the domain and its premise of existence, how to purchase, that is, how to make the commodity as soon as possible from the production field into the circulation field with the best way and the minimum expenses; how to make the commodity move toward the circulation field as soon as possible and realize its use value. Buying and selling in the circulation field is a whole pair of contradictions. They are interdependent, mutually restrictive, and mutual development. The purchase is the condition of the sale, the sale is the purchase of the knot