ink-sea inkstone

例句：

1. 1. The ancient inkstones are still used today as writing tools.
   古老的墨水石仍然被用作书写工具。
2. 2.The inkstone is a symbol of the writer's dedication to their craft.
   墨水石是作家对其艺术的奉献的象征。
3. 3.The inkstone was made from a rare mineral that gives it a unique color.
   墨水石是由一种稀有矿物制成的，它有独特的颜色。