potassium hyposulfite

例句：

1. 1. This chemical is used as a preservative in food processing.
   这种化学物质在食品加工中用作防腐剂。
2. 2. Potassium hyposulfite is often used to treat burns and wounds.
   亚硫酸钾常用于治疗烧伤和伤口。
3. 3. In the laboratory, potassium hyposulfite is used to detect bacteria.
   在实验室里，亚硫酸钾被用来检测细菌。