https://youtu.be/kKArGd7nXjs?t=47
严家淦是中华民国第5任总统。英文只能说Yen Chia-kan was the 2nd president of
the Republic of China. 约翰·亚当斯是美国第3任总统。英文只能说John Adams was
the 2nd president of the United States. 川普是美国the 45th 和the 47th 总统，翻
译成第45任与第47任，容易造成误解。