马克思在研究剩余价值是怎样产生的时候，先假定商品都是按它的价值出卖的，假定商品包含多少剩余价值，就实现多少剩余价值。

Marx supposes that all commodities are sold at its full value, and that the surplus value contained in them is fully realized when he studies how the surplus value comes into being.

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最后，企业主带着这些产品回到商品流通领域，再次通过等价交换而完成剩余价值的实现。

Then owners of the factories take these commodities back to the realm of circulation and realize their surplus value through another round of exchange based on equivalence of value.

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商品的价值能否实现，是没有保证的。

There is no guarantee for the realization of the value of commodities.

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