string(242) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%A1%BA%E4%B8%B022%E5%85%83%E6%AF%9418%E5%85%83%E5%BF%AB%E5%A4%9A%E5%B0%91 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
顺丰22元比18元快多少
