string(260) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B9%B4%E5%81%9A%E4%BB%80%E4%B9%88%E9%94%80%E5%94%AE%E6%9C%89%E5%89%8D%E9%80%94%E5%91%A2 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
2021年做什么销售有前途呢
