https://blog.wongcw.com/2021/01/13/%e6%88%aa%e6%ad%a2%e6%97%a5%e6%9c%9f%e5%b7%b2%e5%88%b0%ef%bc%9aadobe%e5%86%8d%e6%ac%a1%e5%bc%b7%e7%83%88%e5%bb%ba%e8%ad%b0%e7%94%a8%e6%88%b6%e5%8d%b8%e8%bc%89flash-player/