ursin

例句：

1. 1.The ursin is a rare and valuable species of plant.
   乌辛是一种稀有且珍贵的植物品种。
2. 2. The ursin has been used in traditional medicine for centuries.
   乌辛在传统医学中被使用了几个世纪。
3. 3. The ursin is known for its medicinal properties and its ability to heal wounds.
   乌辛以其药用特性和愈合伤口的能力而闻名。