黄金的实用性不大，除了用于储存价值，这与一般商品不同（如石油，它的消费速度和开采和精炼的速度一样快），因此它的供应 /需求时间表有独特的特性。
Gold has little utility except as a store of value, unlike most commodities (like oil, which is consumed as quickly as it's extracted and refined), so its supply/demand schedule has unusual traits.
针对流行性商品需求不确定及生命周期短暂的特性，制造商对零售商采取全部退货政策。
Aimed at characteristics of indefinite demand and the short-life cycle of the epidemic commodity, the manufacturer adopts complete returns policy to the retail.
针对流行性商品需求不确定及生命周期短暂的特性，制造商对零售商采取全部退货政策。
Aimed at characteristics of indefinite demand and the short-life cycle of the epidemic commodity, the manufacturer adopts complete returns policy to the retail.
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