selenite
selenite[ˈsɛlɪnʌɪt]noun- [mass noun]a form of gypsum occurring as transparent crystals or thin plates
透明石膏
selenitic[-ˈnɪtɪk]adjective语源- mid 17th cent.: via Latin from Greek selēnitēs lithos 'moonstone', from selēnē 'moon' + lithos 'stone'
考试词汇表