风棱石，风磨石已被风吹起的沙子磨成形、磨光并磨成面的石头
A stone that has been shaped, polished, or faceted by wind-driven sand.
黑斑，瑕疵黑块或黑斑，如磨光的石头上的黑斑
A dark region or blemish, as on a polished stone.
贝壳串珠由磨光后的贝壳制成的穿成链或带状物的小圆柱形珠子，早先某些美洲土著民族用其作为货币与珠宝或用于部落之间礼仪交换之物
Small cylindrical beads made from polished shells and fashioned into strings or belts, formerly used by certain Native American peoples as currency and jewelry or for ceremonial exchanges between groups.
擦亮者，磨光工人把东西擦亮的人，尤指用来上不光的软皮革或布料来擦亮的人
One that buffs, especially a piece of soft leather or cloth used to shine or polish.
