Houdan

例句：

1. 1.Houdan is a traditional Chinese medicine that has been used for centuries.
   胡丹是一种传统中药，被使用了几个世纪。
2. 2.The Houdan plant is known for its medicinal properties.
   胡丹植物因其药用特性而闻名。
3. 3. In traditional Chinese medicine, Houdan is often used to treat various ailments.
   在传统中医中，胡丹常用于治疗各种疾病。