noun🔗Share石灰石，灰岩 An abundant rock of marine and fresh-water sediments; primarily composed of calcite (CaCO3); it occurs in a variety of forms, both crystalline and amorphous."The white cliffs were made of limestone, a rock formed from ancient seashells. "这些白色悬崖是由石灰石构成的，石灰石是一种由远古贝壳形成的岩石。geologymaterialsubstancemineralChat with AIVocabulary GamePractice Reading
adjective🔗Share石灰石的 Made of or with limestone."The garden path was made of limestone gravel. "这条花园小路是用石灰石碎石铺成的。geologymaterialsubstanceChat with AIVocabulary GamePractice Reading
