potassium metabisulfite

例句：

1. 1. This compound is used as a preservative in food processing.
   这种化合物在食品加工中用作防腐剂。
2. 2.Potassium metabisulfite is often added to water to prevent algae growth.
   亚硫酸钾常被添加到水中以防止藻类生长。
3. 3. The potassium metabisulfite solution was used to treat the water quality issues.
   使用亚硫酸钾溶液来处理水质问题。