https://qooah.com/2012/11/02/google-%e5%9c%b0%e5%9c%96%e4%be%b5%e7%8a%af%e4%ba%86-apple-%e5%9c%b0%e5%9c%96%e7%9a%84%e6%96%b0%e5%b0%88%e5%88%a9/