ADV [ADVERB adjective]完全(相反);截然(不同) If you say that two things are diametrically opposed, you are emphasizing that they are completely different from each other. 完全(相反);截然(不同) [emphasis]
They came to conclusions diametrically opposed to ours.
他们得出了与我们完全相反的结论。
The economic crisis was interpreted in diametrically opposing ways.