leuna saltpeter

例句：

1. 1.The mineral leuna saltpeter is used in the production of glass.
   这种矿物盐石用于玻璃的生产。
2. 2. The ancient city of Leuna Saltpeter was a major trading hub during the Roman Empire.
   古罗马时期的城市Leuna Saltpeter是一个重要的贸易中心。
3. 3.The saltpeter mines are located in the mountains of Leuna Saltpeter, where they produce high-quality salt.
   盐矿位于Leuna Saltpeter的山区，那里生产高品质的盐。