string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BA%9F%E9%93%81%E4%BB%B7%E6%A0%BC%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8A%E6%B6%A8%E4%BA%86%E5%91%A2 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
废铁价格为什么上涨了呢
