noun 下载 🔗分享 萤石,氟石。 A widely occurring mineral (calcium fluoride), of various colours, used as a flux in steelmaking, and in the manufacture of glass, enamels and hydrofluoric acid. Examples : "Fluorite is the main natural resource of Thailand." 萤石是泰国主要的自然资源。 mineral material substance geology chemistry industry science 与AI对话词汇游戏阅读练习