sicklerite

例句：

1. 1.Sodium sulfide is used as a fungicide to prevent plant diseases.
   硫化钠用作杀菌剂，防止植物病害。
2. 2. The chemical reaction between sodium sulfide and water produces hydrogen sulfide gas.
   硫化钠与水发生化学反应产生硫化氢气体。
3. 3. In the mining industry, sodium sulfide is often used as an ore treatment agent.
   在矿业中，硫化钠常被用作矿石处理剂。