青石的英文:
bluestone
Driving a nail into a stone slab/impossible to penetrate
青石板上钉钉,硬钻
A dichroic violet - blue to gray mineral silicate of magnesium,aluminum,and sometimes iron.
堇青石一种呈介于紫蓝于灰色的二色性矿物,是含镁、铝、有的也含铁的硅酸盐
A gray,green,or brown mineral similar to mica,formed by chemical alteration of other minerals,such as cordierite.
块云母类似云母的灰色、绿色或棕色矿物,由其它矿经化学变化形成,如堇青石
n. 硫酸铜,青石