https://qooah.com/2014/01/27/ipod-%e4%b9%8b%e7%88%b6%e8%ab%87%e5%8a%a0%e5%85%a5-google-%e5%be%8c%e8%88%87-apple-%e7%9a%84%e9%97%9c%e4%bf%82/