Haplosclerida

例句：

1. 1. The haplosclerids are a group of organisms that have lost their ability to produce eggs.
   无翅目是一类已经失去了产卵能力的生物。
2. 2. Haplosclerids are found in various habitats, including freshwater and marine environments.
   无翅目存在于各种生境中，包括淡水和海洋环境。
3. 3. Haplosclerids are often characterized by their unique adaptations to their environment.
   无翅目通常以其独特的适应环境的特征而著称。