並前往https://ocw.niu.edu.tw/pluginfile.php/532/mod_folder/content/0/Chapter02%20%E9%9C%80%E6%B1%82.%E4%BE%9B%E7%B5%A6%E8%88%87%E5%B8%82%E5%A0%B4%E5%9D%87%E8%A1%A1-%E5%AE%8C%E6%95%B4%E7%89%88.pdf?forcedownload=1
