string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%80%E4%B9%88%E5%B9%B3%E5%8F%B0%E6%B5%81%E9%87%8F%E5%A4%A7%E8%BF%98%E4%BE%BF%E5%AE%9C%E7%82%B9 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
什么平台流量大还便宜点
