n.any of a family of glassy minerals analogous to feldspar containing hydrated aluminum silicates of calcium or sodium or potassium; formed in cavities in lava flows and in plutonic rocks

1. Natural zeolites are commonly used in water filtration due to their ability to remove contaminants.
   天然沸石常用于水過濾，因為它們具有去除污染物的能力。
2. The zeolites in the catalyst help improve the efficiency of the chemical reaction.
   催化劑中的沸石有助于提高化學反應的效率。