A fine,compact,usually white claylike mineral of hydrous magnesium silicate,H4Mg2Si3O10,found in the Mediterranean area and used in fashioning tobacco pipes and as a building stone.是什么意思_A fine,compact,usually white claylike mineral of hydrous magnesium silicate,H4Mg2Si3O10,found in the Mediterranean area and used in fashioning tobacco pipes and as a building stone.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句