中间商购买商品是为了再转售，对购货成本即中间商市场的价格变化较为敏感，其需求量随价格涨落的变化而变化。
For resales, resellers are sensitive to the cost, namely the price of reseller market, whose change will cause that of the demand.
中间商购买商品是为了再转售，对购货成本即中间商市场的价格变化较为敏感，其需求量随价格涨落的变化而变化。
For resales, resellers are sensitive to the cost, namely the price of reseller market, whose change will cause that of the demand.
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