曾读过这么一则寓言,说的是驴子背盐渡河,在河边摔了一跤,跌在水里,那盐溶化了。驴子站起来时,感到身体轻松了许多。驴子非常高兴,获得了经验。后来有一回,它背了棉花,以为再跌倒,可以同上次一样,于是走到河边的时候,便故意跌倒在水里。可是棉花吸收了水,驴子非但不能再站起来,而且一直向下沉,直到淹死。这则被经验害死的驴子让我联想到一种有趣的鱼——肺鱼。肺鱼大多生活在美国西部人烟稀少的沼泽地带, Once I read such a parable, I said that the donkey crossed the river and crossed the river. He fell by the river and fell into the water. The salt melted. When the donkey stood up, it felt much easier. The donkey was very happy and gained experience. Later, once it was back with cotton, it thought that it would fall again. It could be the same as last time. When it came to the river, it fell down in the water. However, cotton absorbs water and the donkey can no longer stand up but sinks until it drowns. This donkey, which was killed by experience, reminds me of an interesting fish, lungfish. Most lungfish live in sparsely populated swamps in the western United States.