string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%9D%E7%BA%A7%E6%B3%A8%E5%AE%89%E4%B8%8E%E4%B8%AD%E7%BA%A7%E6%95%99%E6%9D%90%E4%B8%80%E6%A0%B7%E5%90%97 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
初级注安与中级教材一样吗
