string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ipad%E7%AC%AC9%E4%BB%A3%E5%8F%82%E6%95%B0%E9%85%8D%E7%BD%AE%E5%86%85%E5%AD%98 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
ipad第9代参数配置内存
