在网上购买中，群体议价折扣法是一种可以快速改变价格的模型。
Group buying discounts are one of the pricing models that can be used for fast changes of prices in the Internet business.
因为很多消费者认为需要保护小型零售店免受来自大型零售连锁店的激烈竞争，《折扣法》一直到战后仍然有效。
The Discount Law lived on beyond the war years because many consumers saw a need to protect small shopkeepers from large retail chains.
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