metasulfite

例句：

1. 1.This chemical is used in the production of paper and other materials.
   这种化学物质用于生产纸张和其他材料。
2. 2.The process involves treating wood with a solution of metasulfite.
   这个过程涉及用亚硫酸盐溶液处理木材。
3. 3.Metasulfite is also used as a preservative to prevent decay in wooden objects.
   亚硫酸盐也用作防腐剂，防止木质物品腐烂。