string(250) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%88%B1%E8%BF%AA%E7%94%9F%E7%9A%84%E6%95%85%E4%BA%8B500%E5%AD%97%E4%BB%A5%E4%B8%8A => Failed to connect to 61.171.74.35 port 38041: Connection refused"
爱迪生的故事500字以上
