distributor's profit margin

例句：

1. 1.The company's profit margin has been declining due to increased competition.
   由于竞争加剧，公司的利润率一直在下降。
2. 2.The new product line has a higher profit margin than the old one.
   新产品线的利润边际比旧产品高。
3. 3. The company is looking to increase its profit margin by reducing costs.
   公司正寻求通过降低成本来提高其利润率。