string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%8E%B0%E5%9C%A8%E5%88%9B%E4%B8%9A%E5%A4%B1%E8%B4%A5%E7%8E%87%E9%AB%98%E5%90%97 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
现在创业失败率高吗
