股票价格由经纪的偏向以及市场反馈的相互作用来决定，且在当前清算机制下，一天中的价格是固定的。

The stock price depends on the interaction between agents' sentiments and market feedback, and is fixed each day by a clearing house mechanism.

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像其他商品那样，货币在自由市场上的价格是由供给和需求决定的。

In a free market the price of money is determined by supply and demand, just like the price of other goods.

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因此，最优货币价格是由所有的市场参与者根据自身的需求和愿望，通过供应和购买商品和货币，来共同决定的。

Thus, the only optimal currency price is that which is set by all market participants jointly by way of their supplying and demanding both goods and currency based on their needs and desires.

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