Usnea

例句：

1. 1. The seaweed is rich in iodine and can be used as a natural remedy for thyroid problems.
   这种海藻富含碘，可以用作治疗甲状腺问题的自然疗法。
2. 2. The kelp forests are home to many marine species that contribute to the ecosystem's balance.
   海带森林是许多海洋物种的家园，这些物种有助于生态系统的平衡。
3. 3. In traditional Chinese medicine, seaweed has been used for centuries to treat various ailments.
   在传统中医中，海藻被使用了几个世纪来治疗各种疾病。