string(313) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A4%96%E5%8D%96o2o%E7%89%A9%E6%B5%81%E9%85%8D%E9%80%81%E6%A8%A1%E5%BC%8F%E5%8F%91%E5%B1%95%E7%9A%84%E7%8E%B0%E7%8A%B6%E6%98%AF%E4%BB%80%E4%B9%88 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
外卖o2o物流配送模式发展的现状是什么
