stem eelworm

例句：

1. 1.The fish farmer is trying to raise more fish for the market.
   这位渔民正在尝试养殖更多的鱼以供应市场。
2. 2.The young fish are growing quickly and will soon be ready for sale.
   这些小鱼生长得很快，很快就会准备好出售了。
3. 3. The fish farmer has been working hard to improve the quality of his fish.
   这位渔民一直在努力提高他鱼的质量。