https://qooah.com/2011/07/15/apple%e6%8b%92google%e4%b8%8a%e6%9e%b6-google%e8%a8%88%e8%ac%80%e4%bb%a4apple-%e9%80%b2%e9%80%80%e5%85%a9%e9%9b%a3/