Choeropotamidae

例句：

1. 1.The crocodile is a reptile that lives in rivers and lakes.
   鳄鱼是一种生活在河流和湖泊中的爬行动物。
2. 2. Crocodiles are known for their ability to swim long distances.
   鳄鱼以其游泳能力而闻名。
3. 3.The crocodile's skin is covered with scales, which protect it from predators.
   鳄鱼的皮肤覆盖着鳞片，保护它免受捕食者的伤害。