一只蝴蝶从窗外飞了进来,它在房间里一圈又一圈地飞舞着,想努力飞出房子,可始终没能飞出去。原因是它只在房间顶部的空间寻找出路,总不肯往低处飞,而那低一点的位置就是敞开着的窗户。有好几次,它都飞到了高于窗户顶部一点点的位置,可就是不肯再往低飞一点,它在窗户顶部以上的 A butterfly flew in from the window, flying around and around in the room, trying hard to fly out of the house without ever flying out. The reason is that it is only looking for a way out in the space at the top of the room, and it always refuses to fly low, while the lower position is an open window. Several times, it flew a little above the top of the window, but refused to fly a little further down the top of the window