string(285) "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%9218%E5%9D%97%E9%92%B1%E6%98%AF%E5%BF%AB%E8%BF%90%E8%BF%98%E6%98%AF%E6%85%A2%E8%BF%90 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
顺丰快递18块钱是快运还是慢运
