3 sentences

1. 指挥官敏锐地察觉到了进攻的战机。

   zhǐ​huī​guān mǐn​ruì de chá​jué​dào le jìn​gōng de zhàn​jī.

   The commander was keenly aware of the opportunity to attack.

   Source: Dong Chinese Dictionary

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

3. 由于内部人员泄露战机，我军的行动计划被迫取消。

   yóu​yú nèi​bù rén​yuán xiè​lù zhàn​jī, wǒ jūn de xíng​dòng jì​huà bèi​pò qǔ​xiāo.

   Our military's operational plan was forced to be canceled because an insider leaked military secrets.

   Source: Dong Chinese Dictionary