roestelium

例句：

1. 1.The roestelium is a rare mineral found in the mountains.
   罗塞特林是一种在山区发现的稀有矿物。
2. 2.The roestelium has been used for centuries in traditional medicine.
   罗塞特林在传统医学中被使用了几个世纪。
3. 3.The roestelium is believed to have healing properties.
   人们相信罗塞特林具有治愈属性。