並前往https://davidhuang1219.pixnet.net/blog/post/273679876-%E5%A6%82%E4%BD%95%E8%A8%88%E7%AE%976%E5%B9%B4%E6%9C%9F%E7%B9%B3%E5%84%B2%E8%93%84%E9%9A%AA%E7%9A%84irr%28%E5%85%A7%E9%83%A8%E5%A0%B1%E9%85%AC%E7%8E%87%29