string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%80%E4%B9%88%E5%8F%AB%E9%87%8D%E5%A4%8D%E9%93%BA%E8%B4%A7%E8%B4%A7%E7%89%A9%E8%BF%90%E8%BE%93%E5%91%A2 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
什么叫重复铺货货物运输呢
