详细解释:n. 硫酸铜, 胆矾
【化】 胆矾; 蓝灰砂岩
英语解释：
名词 bluestone:
bluish-grey sandstone used for paving and building详细解释：
blue.stone
n.（名词）A bluish-gray sandstone used for paving and building.青石，蓝砂岩：一种蓝灰色的沙岩，用于砌路或建筑A stone similar to this kind of sandstone.蓝矾：一种与蓝砂岩相似的石头