脊椎动物门

例句：

1. 1. The classification of animals is based on their ability to move through water.
   动物的分类是基于它们是否能在水中移动的能力。
2. 2. This species belongs to the order of fishes.
   这个物种属于鱼类的纲。
3. 3. Invertebrates are those that lack a backbone and instead have a soft body.
   无脊椎动物是没有脊柱的动物，而是有柔软的身体。