多足类

例句：

1. 1. The octopus is a fascinating creature known for its eight arms.
   章鱼是一种令人着迷的生物，以其八条触手而闻名。
2. 2. Many species of animals have evolved to live in the water, including the clownfish and the starfish.
   许多动物已经进化成适应水生生活，包括小丑鱼和海星。
3. 3. Scientists are studying how these creatures adapt to their environments.
   科学家们正在研究这些生物是如何适应其环境的。