https://blog.wongcw.com/2018/11/04/%e6%96%b0macbook-air%e7%9a%84%e5%ae%89%e5%85%a8%e8%8a%af%e7%89%87%e4%b8%8d%e4%bb%85%e8%83%bd%e9%98%b2%e7%aa%83%e5%90%ac-%e8%bf%98%e8%83%bd%e9%98%b2%e6%ad%a2%e7%ac%ac%e4%b8%89%e6%96%b9%e7%bb%b4/