求翻译：这种靠赚取差价盈利的模式，核心是优化供应链，发挥了零售业本身的优势，通过大规模采购，引入价格更低廉的商品，在低价的基础上再加价销售，赚取差价。由于是零售商直接从产地自己采购的商品，这样商品就省去了代理和进店费用的交易成本。是什么意思？

This pattern of profit by pocketing the difference, the core is to optimize the supply chain to the retail industry's own advantage, through large-scale procurement, the introduction of cheaper goods in low price based on the combined sales, profit . As for the retailers purchase directly from the o

This depends on the model, and the core earnings skim profits is to optimize supply chain, and has played a retail industry itself, through large-scale procurement of advantages, the introduction of cheaper commodities, at a low price on the basis of the sales price, plus earn post. Because of the r

This kind depends on earns the price difference profit the pattern, the core optimizes the supply chain, has displayed the retail trade itself superiority, through the large-scale purchase, an introduction price more inexpensive commodity, increases price again in the low price foundation the sale,

This profit profit model, the core is to optimize supply chains, taking advantage of the retail industry itself, through mass procurement, the introduction of cheaper commodities, low-price increases on the basis of sales, profit. Thanks to the procurement of commodities are retailers directly from

This profit profit model, the core is to optimize supply chains, taking advantage of the retail industry itself, through mass procurement, the introduction of cheaper commodities, low-price increases on the basis of sales, profit. Thanks to the procurement of commodities are retailers directly from