string(247) "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%E5%A6%82%E4%BD%95%E6%89%BE%E5%AE%A2%E6%BA%90%E5%91%A2 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
做销售如何找客源呢
