精炼机

例句：

1. 1.The chef refined the recipe to make it even tastier.
   厨师改进了食谱，使其更加美味。
2. 2. Refining oil is a process that removes impurities from petroleum.
   精炼石油是一种去除石油中杂质的过程。
3. 3. The company has been refining its product line to meet market demands.
   该公司一直在对其产品线进行精炼，以满足市场需求。