2 sentences

1. 我们来一次公平的对决。

   wǒ​men lái yī cì gōng​píng de duì​jué.

   Let's have a fair fight.

   Source: OpenSubtitles

2. 两架战机在演习中模拟了空中对决。

   liǎng jià zhàn​jī zài yǎn​xí zhōng mó​nǐ le kōng​zhōng duì​jué.

   Two fighter jets simulated an aerial duel during the exercise.

   Source: Dong Chinese Dictionary