3 sentences

1. 英勇的士兵们多次击退了敌人的进攻。

   yīng​yǒng de shì​bīng men duō cì jī​tuì le dí​rén de jìn​gōng.

   The brave soldiers repelled the enemy's attacks multiple times.

   Source: Dong Chinese Dictionary

2. 主力军在正面战场上击退了敌人的进攻。

   zhǔ​lì​jūn zài zhèng​miàn zhàn​chǎng shàng jī​tuì le dí​rén de jìn​gōng.

   The main forces repelled the enemy's attack on the front line.

   Source: Dong Chinese Dictionary

3. 战士们誓死坚守阵地，击退了敌人的数次进攻。

   zhàn​shì men shì​sǐ jiān​shǒu zhèn​dì, jī​tuì le dí​rén de shù cì jìn​gōng.

   The soldiers swore to hold their ground and repelled several enemy attacks.

   Source: Dong Chinese Dictionary