有一个笑话说:在大街上,一个人突然停下来抬头向着天空,周围的人非常奇怪,都纷纷向天上望去,结果什么都没有看见,再三询问后才知,原来那人仰头是为了止住鼻出血。虽然这是个笑话,但从中不难看出,有些人以为鼻出血后 There is a joke: In the street, a man suddenly stopped to look up to the sky, surrounded by people very strange, have looked to the sky, the results did not see anything, repeatedly asked after I learned that the original person who looked up to Stop the nose bleeding. Although this is a joke, but it is not difficult to see that some people think that after the epistaxis