maintenance of commodity

例句：

1. 1. Thecompany's main goal is to maintain its competitive edge in the market.
   公司的主要目标是在市场上保持其竞争优势。
2. 2. Maintenance of commodities is a critical aspect of supply chain management.
   商品维护是供应链管理的关键方面。
3. 3. The engineers are responsible for maintaining the equipment and ensuring it runs smoothly.
   工程师负责维护设备并确保其顺畅运行。