string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%AE%89%E5%93%AA%E4%B8%AA%E7%BD%91%E6%A0%A1%E8%AE%B2%E7%9A%84%E5%A5%BD => Failed to connect to 61.171.74.35 port 38041: Connection refused"
注安哪个网校讲的好
