string(262) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E6%A0%B7%E6%B8%85%E7%90%86ipad%E5%AD%98%E5%82%A8%E7%A9%BA%E9%97%B4%E5%9E%83%E5%9C%BE => Failed to connect to 101.89.117.144 port 38005: Connection refused"
怎样清理ipad存储空间垃圾
