string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B7%98%E5%AE%9D%E7%9A%84%E6%9C%BA%E5%99%A8%E4%BA%BA%E8%A6%81%E9%92%B1%E5%90%97%E5%AE%89%E5%85%A8%E5%90%97 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
淘宝的机器人要钱吗安全吗
