amphicoelous centrum

例句：

1. 1.The amphibians are the onlyanimals that can live both on land andin water.
   两栖动物是唯一一个既能在陆地上也能在水中生活的动物。
2. 2. Theamphibians have adapted to survivein the changing climate conditions.
   两栖动物已经适应了气候变化的生存条件。
3. 3. The amphibians play an important role inmaintaining the balance of the ecosystem.
   两栖动物在维持生态系统平衡中起着重要的作用。