string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%81%9A%E9%94%80%E5%94%AE%E9%82%A3%E4%B8%AA%E8%A1%8C%E4%B8%9A%E6%AF%94%E8%BE%83%E5%A5%BD => Failed to connect to 101.89.159.206 port 38187: Connection refused"
做销售那个行业比较好
