https://blog.wongcw.com/2019/07/29/%e4%b8%89%e6%98%9f%e7%9a%84%e6%96%b0%e6%89%8b%e6%a9%9f%e6%9c%893%e5%80%8b%e5%8f%af%e6%93%b4%e5%b1%95%e7%9a%84%e5%b1%8f%e5%b9%95/
三星的新手機有3個可擴展的屏幕