noun 다운로드 🔗공유 형석 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." 형석은 태국의 주요 천연 자원입니다. mineral material substance geology chemistry industry science AI와 채팅어휘 게임독해 연습