The fish quit school because he was bored. To him, all four subjects were the same, but nobody understood that because they had never seen a fish.
鱼辍学了。因为它感觉上学太没意思了，对它而言，所有的四门课程都是一样的，但是没有人能够理解它，因为他是他们见过的第一条鱼。