並前往https://www.ylsh.mlc.edu.tw/uploads/course_activity_file/file/56cea93a1d41c8498f005030/CH3_%E5%9C%B0%E5%BD%A2%E7%9A%84%E5%B1%95%E7%A4%BA%E8%88%87%E5%88%A4%E8%AE%80N.ppt
