noun 下载 🔗分享 方解石, 碳酸钙。 A very widely distributed crystalline form of calcium carbonate, CaCO3, found as limestone, chalk and marble Examples : "Many caves are formed from limestone, which is mostly made of the mineral calcite. " 许多洞穴是由石灰岩构成的,而石灰岩的主要成分是方解石这种矿物。 geology mineral substance chemistry material 与AI对话词汇游戏阅读练习