cyanidum

例句：

1. 1. The ancient city of Uruk is famous for its cyanidum mines.
   古代城市乌鲁克以其青金石矿而闻名。
2. 2.The cyanidum was used in ancient times as a symbol of wealth and power.
   青金石在古代被用作财富和权力的象征。
3. 3.The cyanidum mines are still active today, producing some of the world's finest gemstones.
   青金石矿至今仍在开采中，生产着世界上一些最好的宝石。