fraxetin

例句：

1. 1. The fraxetin is a rare and valuable plant species.
   这种植物是稀有且珍贵的。
2. 2. The fraxetin has been used in traditional medicine for centuries.
   这种植物在传统医学中被使用了几个世纪。
3. 3. The fraxetin is known for its medicinal properties and is often used to treat various ailments.
   这种植物因其药用性质而闻名，通常用于治疗各种疾病。