di·a·met·ri·cal
adjective/ˌdaɪəˈmetrɪkl/
/ˌdaɪəˈmetrɪkl/
[usually before noun]- used to emphasize that people or things are completely different
截然相反的；完全不同的 - He's the diametrical opposite of his brother.
他和他的弟弟截然不同。
- He's the diametrical opposite of his brother.
- relating to the diameter of something
直径的
Word Originmid 16th cent. (in sense (2)): from Greek diametrikos (from diametros ‘measuring across’: see diameter) + -al.