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.
他們得出了與我們完全相反的結論。
The economic crisis was interpreted in diametrically opposing ways.