string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E7%AB%99%E6%80%8E%E4%B9%88%E6%8E%A8%E5%B9%BF%E6%95%88%E6%9E%9C%E5%A5%BD%E4%B8%80%E7%82%B9%E5%91%A2 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
网站怎么推广效果好一点呢
