string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%BA%E4%BB%80%E4%B9%88%E7%8E%B0%E5%9C%A8%E5%88%9B%E4%B8%9A%E5%AE%B9%E6%98%93%E5%A4%B1%E8%B4%A5 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
为什么现在创业容易失败
