sulfite

例句：

1. 1. The chemical is used as a preservative in food and beverages.
   这种化学物质在食品和饮料中用作防腐剂。
2. 2.Sodium sulfite is commonly found in baking powder.
   亚硫酸钠常存在于烘焙粉中。
3. 3. In the process of fermentation, sulfites are converted into sulfuric acid.
   在发酵过程中，亚硫酸盐被转化为硫酸。