https://blog.wongcw.com/2020/01/08/%e7%b8%ab%e7%b8%ab%e8%a3%9c%e8%a3%9c%e5%8f%88%e4%b8%89%e5%b9%b4%ef%bc%9a%e4%b8%80%e5%b9%b4%e8%b3%ba8%e5%84%84%e7%9a%84c%e7%be%85%e4%be%9d%e8%88%8a%e5%9c%a8%e7%94%a8%e5%81%9c%e7%94%a2%e7%9a%84ipod-shuf/