腹足动物

例句：

1. 1. The octopus is a fascinating creature with eight arms and tentacles.
   章鱼是一种令人着迷的生物，有八条手臂和触手。
2. 2. The squid has a unique ability to sense vibrations in the water.
   鱿鱼有一种独特的能力，能在水下感知振动。
3. 3. A gastropod is a type of mollusk that lives in the ocean.
   一种腹足动物是一类生活在海洋中的软体动物。