string(249) "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%E8%BF%87%E5%85%AD%E9%97%A8%E6%9C%89%E8%AF%81%E4%B9%A6%E5%90%97 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
注会过六门有证书吗
