这种情况绝不是什么正常的自由市场交易，不存在有求购意向的买家自由选择进入市场并遇到有出售意向的卖家的情况，因此也就不存在基于供给和需求产生的合理价格。 在紧急关头，买家迫不得已别无选择。
This is not the normal free market situation where willing buyers freely elect to enter into the marketplace and meet willing sellers, where a price is agreed upon based on supply and demand.
为了使市场出清或正常发挥其功能，商品与服务的需求量和供给量在一定的价格水平上必须是相等的。
In order for a market to "clear" or function properly, the quantity of goods and services demanded and supplied must be equal at some given price.
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