人的一生有一大部分的时间是在睡眠中度过的。那么动物呢?大多数鱼睁着眼睛睡觉。因为鱼儿没有真正的眼睑(jiǎn),眼睛完全裸露而不能闭合,所以它们睡觉的时候也把眼睛睁得大大的。而且它们睡觉的时间很短,长则一二十分钟,短则只有几秒钟。同学们眨眨眼的工夫,一些鱼儿已睡个“大觉”了。如果你们发 Most of the person’s life is spent in sleep. So what about animals? Most fish sleep with their eyes open. Because the fish do not have real eyelids, the eyes are completely naked and can not be closed, so they are also eyes wide open when they sleep. And they sleep for short periods of time, one to twenty minutes long and only a few seconds short. Students blinked their time, some of the fish have slept a “big” . If you send