string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%8A%E5%AD%A6%E6%98%AF%E8%87%AA%E6%84%BF%E7%9A%84%E5%90%97 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
上学是自愿的吗
