https://qooah.com/2012/10/13/motorola-%e7%a6%8d%e4%b8%8d%e5%96%ae%e8%a1%8c%ef%bc%8c%e5%86%8d%e6%ac%a1%e8%a2%ab-microsoft-%e8%b5%b7%e8%a8%b4%ef%bc%8cgoogle-%e4%ba%a6%e5%8f%97%e7%89%bd%e9%80%a3/