noun🔗Share碎玻璃，玻璃渣。 Scrap glass which is melted down for reuse."The factory collects cullet, like broken bottles and jars, to melt down and make new glass products. "这家工厂收集碎玻璃和玻璃渣，比如破损的瓶子和罐子，把它们熔化后制成新的玻璃制品。materialsubstanceindustryChat with AIVocabulary GamePractice Reading
noun🔗Share底尖, 亭底 A small central plane in the back of a cut gem."The jeweler carefully polished the gemstone, ensuring the cullet was perfectly centered and reflected light evenly. "珠宝匠小心地打磨着宝石，确保底尖完美居中，并能均匀地反射光线。materialpartChat with AIVocabulary GamePractice Reading
