https://cn.vogon.today/%e7%b6%93%e6%bf%9f%e6%83%85%e6%99%af/%e9%a6%ac%e5%be%b7%e9%87%8c%e5%a5%87%e8%b9%9f%e3%80%82%e9%80%99%e6%98%af%e5%bb%a3%e7%be%a9%e9%97%9c%e9%96%89%e7%9a%84%e6%9b%bf%e4%bb%a3%e6%96%b9%e6%b3%95/
馬德里奇蹟。這是廣義關閉的替代方法