水晶一种具有晶体结构的矿石,尤指石英的一种透明形态,通常其晶面在同一平面上 A mineral, especially a transparent form of quartz, having a crystalline structure, often characterized by external planar faces.
角帖书一种早期初级读物,即为一张盖有透明角片作为保护的书页,以前供儿童认字用 An early primer consisting of a single page protected by a transparent sheet of horn, formerly used in teaching children to read.