phosphazine

例句：

1. 1. This compound is used in the production of phosphorus pentasulfide.
   这种化合物用于生产五硫化四磷。
2. 2.The chemical reaction between phosphorus pentasulfide and water produces hydrogen sulfide gas.
   五硫化四磷与水之间的化学反应产生硫化氢气体。
3. 3.Phosphorus pentasulfide is a highly toxic substance that can cause respiratory problems when inhaled.
   五硫化四磷是一种高度有毒的物质，吸入时会导致呼吸问题。