求翻译：一旦期货市场在现货市场内在要求的推动下得以形成和发展起来，它就会反作用于现货市场，并通过其独特的经济功能来能动地调节和引导现货市场的运行和发展。然而，现货市场结构的不完善性为期货市场的实际功能和现实运行效果限定了一个难以逾越的边界。是什么意思？

Once in the spot market, futures market, driven by internal requirements to be formed and developed, it will be counterproductive in the spot market and through its unique economic functions to dynamically adjust and guide the operation and development of the spot market. However, the imperfection o

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Once the futures market can form in under the stock market intrinsic request impetus and develop, it can the reaction in the stock market, and comes through its unique economical function to be able to move the adjustment and the guidance stock market movement and the development.However, the stock

Once the requirements inherent in the spot market, driven by the futures market to the formation and development, and it reacts to the spot market, and through its unique economic feature to dynamically regulate and guide the operation and development of the spot market. However, the spot market imp

Once the forward market can be formed and developed under the inherent push that requires of the spot market, it will react on the spot market, and regulate and guide the operation and development of spot market actively by its unique economic function. But spot market structure completion limit one