Gymnostomatida

例句：

1. 1. The spider is a gymnostomatid, which means it has eight legs.
   蜘蛛是一种多足动物，这意味着它有八条腿。
2. 2.The discovery of these creatures could revolutionize the study of gymnostomatids.
   对这些生物的发现可能会彻底改变对多足动物的研究。
3. 3. The gymnostomatids are fascinating creatures that have adapted to survive in extreme environments.
   这些多足动物令人着迷，它们已经适应了在极端环境中生存。