1、The lamprey is an ancient jawless fish that is known for its sucker-like mouth filled with circular rows of sharp teeth.
- 寄生虫是一种古老的无颌鱼类，以其圆形排列的锋利牙齿充满吸盘状嘴而闻名。

2、Lampreys are often found attached to other fish species and feeding on their blood and bodily fluids.
- 寄生虫经常附着在其他鱼类身上，并以它们的血液和体液为食。