鳄鱼有吞食石块的习惯。有人认为 ,这一现象与鸡鸭吞食砂粒一样 ,是为了帮助消化坚硬的食物。当解剖了鳄鱼后 ,才知道事实并非如此。在鳄鱼的胃里 ,甚至连田螺的薄壳也没有磨碎。那么 ,鳄鱼为啥吞石呢 ?原来鳄鱼腹中的石块起着与轮船内的压仓物一样的作用 ,有了它 ,鳄鱼才能在 Crocodile has the habit of devouring stones. Some people think that this phenomenon, like chickens and ducks swallowing grit, is to help digest hard foods. When the crocodile was dissected, I realized that was not the case. In the crocodile’s stomach, even the snail’s shell is not ground. So why crocodile swallowing it? The original crocodile belly stones play the same role with the pressure inside the ship warehouse, with it, the crocodile to be