string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8A%98%E4%BB%B7%E7%8E%87%E5%AF%B9%E4%B9%B0%E5%8D%96%E6%9C%89%E4%BB%80%E4%B9%88%E5%BD%B1%E5%93%8D => Failed to connect to 14.18.117.71 port 38220: Connection refused"
折价率对买卖有什么影响
