aspermatic

例句：

1. 1. The aspermatics are a fascinating group of creatures.
   无脊椎动物是一组令人着迷的生物。
2. 2.Molluscs are a common type of invertebrate found on land and sea.
   软体动物是一种常见的无脊椎动物，陆地和海洋都有发现。
3. 3.A new species of aspermatic was discovered in the deep ocean.
   在深海中发现了一种新的无脊椎动物物种。