no one would believe that this could be done,so he was shut up alone in a room with
问题描述：
no one would believe that this could be done,so he was shut up alone in a room with
guards at the door and he did it again.
答
由于没人相信这个能做成,于是他要警卫把门并把自己孤身一人关在一个房间里面,把此事再做了一次.