string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E9%82%A3%E4%B8%AA%E7%BD%91%E6%A0%A1%E5%A5%BD => Failed to connect to 101.89.117.144 port 38022: Connection refused"
注会那个网校好
