mercaleukin

例句：

1. 1.The mercaleukin is a rare and valuable species of fish.
   这种鱼是一种稀有且珍贵的鱼类。
2. 2. The mercaleukin has been the subject of many scientific studies.
   这种鱼一直是许多科学研究的对象。
3. 3.The mercaleukin is known for its unique coloration and taste.
   这种鱼以其独特的颜色和味道而闻名。