string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%B2%9C%E8%8A%B1%E4%B9%B0%E5%9B%9E%E6%9D%A5%E6%80%8E%E4%B9%88%E4%BF%9D%E9%B2%9C%E7%9A%84 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
鲜花买回来怎么保鲜的
