string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%9C%E5%A5%A5%E6%B3%A8%E4%BC%9A%E7%BD%91%E8%AF%BE%E9%A1%BA%E5%BA%8F => Failed to connect to 14.18.117.71 port 38069: Connection refused"
东奥注会网课顺序
