string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E6%A0%B7%E5%9C%A8%E7%BD%91%E4%B8%8A%E5%81%9A%E9%94%80%E5%94%AE => Failed to connect to 14.18.117.71 port 38164: Connection refused"
怎样在网上做销售
