並前往https://ocw.nthu.edu.tw/ocw/upload/53/661/02-%E7%A8%8B%E5%BC%8F%E7%A2%BC%E8%88%87%E8%A8%98%E6%86%B6%E9%AB%94%E4%B9%8B%E6%9C%80%E4%BD%B3%E5%8C%96.ppt