string(260) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%A1%BA%E4%B8%B0%E5%BF%AB%E9%80%9213%E5%85%83%E5%92%8C12%E5%85%83%E7%9A%84%E5%8C%BA%E5%88%AB => Failed to connect to 14.18.117.71 port 38069: Connection refused"
顺丰快递13元和12元的区别
