10 sentences

1. 他是校篮球队的主力中锋。

   tā shì xiào lán​qiú​duì de zhǔ​lì zhōng​fēng.

   He is the starting center for the school basketball team.

   Source: Dong Chinese Dictionary

2. 他是这支篮球队的主力后卫。

   tā shì zhè zhī lán​qiú​duì de zhǔ​lì hòu​wèi.

   He is the starting guard of this basketball team.

   Source: Dong Chinese Dictionary

3. 这支精锐部队是该军的主力。

   zhè zhī jīng​ruì bù​duì shì gāi jūn de zhǔ​lì.

   This elite unit is the main force of the army.

   Source: Dong Chinese Dictionary

4. 他在这场比赛中担任主力前锋。

   tā zài zhè chǎng bǐ​sài zhōng dān​rèn zhǔ​lì qián​fēng.

   He played as a main forward in this match.

   Source: Dong Chinese Dictionary

5. 这支纵队负责掩护主力部队撤退。

   zhè zhī zòng duì fù​zé yǎn​hù zhǔ​lì bù​duì chè​tuì.

   This column is responsible for covering the retreat of the main force.

   Source: Dong Chinese Dictionary

6. 主力球员因伤不得不提前退场治疗。

   zhǔ​lì qiú​yuán yīn shāng bù​dé​bù tí​qián tuì​chǎng zhì​liáo.

   The key player had to leave the field early for medical treatment due to an injury.

   Source: Dong Chinese Dictionary

7. 主力部队撤离时，留下了一个营担任后卫。

   zhǔ​lì bù​duì chè​lí shí, liú​xià le yī gè yíng dān​rèn hòu​wèi.

   When the main force withdrew, a battalion was left behind to act as a rearguard.

   Source: Dong Chinese Dictionary

8. 我军在边境线上的行动成功牵制了敌方的主力。

   wǒ jūn zài biān​jìng​xiàn shàng de xíng​dòng chéng​gōng qiān​zhì le dí​fāng de zhǔ​lì.

   Our army's actions on the border successfully pinned down the enemy's main forces.

   Source: Dong Chinese Dictionary

9. 这支部队的前锋由于推进速度太快，与主力部队失去了联系。

   zhè zhī bù​duì de qián​fēng yóu​yú tuī​jìn sù​dù tài kuài, yǔ zhǔ​lì bù​duì shī​qù le lián​xì.

   The vanguard of this unit lost contact with the main force because it advanced too quickly.

   Source: Dong Chinese Dictionary

10. 眼看比赛大局已定，主教练便让几名主力球员提前下场休息。

    yǎn​kàn bǐ​sài dà​jú yǐ dìng, zhǔ​jiào​liàn biàn ràng jǐ míng zhǔ​lì qiú​yuán tí​qián xià​chang xiū​xi.

    Seeing that the game's outcome was already certain, the head coach subbed out several key players early to rest.

    Source: Dong Chinese Dictionary