string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E5%9B%BD%E5%88%9B%E4%B8%9A%E7%9A%84%E5%A4%B1%E8%B4%A5%E7%8E%87%E9%AB%98%E5%90%97 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
中国创业的失败率高吗
