string(278) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E6%B8%85%E7%90%86ipad%E5%86%85%E5%AD%98%E7%A9%BA%E9%97%B4%E8%8B%B9%E6%9E%9C%E5%B9%B3%E6%9D%BF => Failed to connect to 14.18.117.71 port 38041: Connection refused"
如何清理ipad内存空间苹果平板
