acid-refining

例句：

1. 1. The process of acid-refining is crucial for the production of refined oil.
   酸精炼过程对于生产精制油至关重要。
2. 2. Acid-refining has been shown to improve the quality of fermented foods.
   研究表明，酸精炼可以提高发酵食品的质量。
3. 3. In acid-refining, the crude oil is treated with strong acids to remove impurities and increase its purity.
   在酸精炼过程中，原油会被强酸处理以去除杂质并提高其纯度。