截然相反

tā men de yì jiàn zài biàn lùn zhōng jié rán xiāng fǎn

他们的意见在辩论中截然相反。

Their opinions were at opposite poles of the debate.

nà yǔ nǐ zuó tiān gào sù wǒ de jié rán xiāng fǎn

那与你昨天告诉我的截然相反。

That's the direct opposite of what you told me yesterday.