pycnocephalous

例句：

1. 1.The pycnocephalous worm has a unique ability to sense vibrations in the soil.
   这种具有独特能力的软体动物能够感知土壤中的振动。
2. 2.The pycnocephalous worm is a fascinating creature that has been studied for centuries.
   这种奇特的软体动物吸引了数百年的科学研究。
3. 3. The pycnocephalous worm has been found to play an important role in the ecosystem.
   这种软体动物被发现在生态系统中扮演着重要角色。