urocanin

例句：

1. 1.The urocanin is a rare and valuable species of fish.
   这种鱼是稀有且珍贵的品种。
2. 2. The urocanin has been used in traditional medicine for centuries.
   这种鱼在传统医学中被使用了几个世纪。
3. 3. The urocanin is known for its bright orange color and delicious taste.
   这种鱼以其鲜艳的橙色和美味的味道而闻名。