string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A5%B3%E7%94%9F%E5%BB%BA%E8%AE%AE%E8%80%83%E7%9A%84%E8%AF%81%E4%B9%A6 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
女生建议考的证书
