I assume a defiant attitude.

采取倨傲的态度。

He assumed a defiant attitude toward his employer.

他对雇主采取挑衅的态度。

The opposition between Mars and Pluto shows a defiant attitude.

火星与冥王星之间的对分相显示出反抗的态度。

As regards to Duscher's attitude on the incident after the match, it could be seen as defiant for not making an apology.

赛后杜舍尔对此事的态度可能显得有些不恭敬，因为他没有道歉。