noun🔗Share珍珠岩 An amorphous volcanic glass formed by the hydration of obsidian."The gardener used perlite in the potting mix to help the soil drain better. "园丁在盆栽混合土里加入了珍珠岩，以帮助土壤更好地排水。geologymaterialChat with AIVocabulary GamePractice Reading
noun🔗Share珍珠岩 The lightweight insulating material and aggregate resulting from expanding perlite glass by heat."My mom uses perlite in her garden soil to help with drainage and keep the soil from getting too heavy. "我妈妈在花园土壤里用珍珠岩，因为它能帮助排水，防止土壤变得太沉重。materialgeologybuildingagricultureChat with AIVocabulary GamePractice Reading
