diametrical [ˌdaɪəˈmɛtrɪkəl]

例句:

• He's the diametrical opposite of his brother.
  他和他的弟弟截然不同。
  
• For instance, we stood in diametrical opposition to Chiang Kai - shek's Kuomintang.
  比如, 我们和蒋介石国民党就是根本对立的.
  
• If that failed, someone should just play her this video, which is as close to the diametrical opposite of "Idol" as it gets.
  来自NEWYORKER