8 sentences

1. 他充当了我的向导。

   tā chōng​dāng le wǒ de xiàng​dǎo.

   He served as my guide.

   Source: Dong Chinese Dictionary

2. 磷在硅中充当施主杂质。

   lín zài guī zhōng chōng​dāng shī zhǔ zá​zhì.

   Phosphorus acts as a donor impurity in silicon.

   Source: Dong Chinese Dictionary

3. 祭礼中由孙辈充当尸以受祭。

   jì​lǐ zhōng yóu sūn​bèi chōng​dāng shī yǐ shòu jì.

   In sacrificial rites, a grandchild would act as the 'corpse' (personator of the deceased) to receive offerings.

   Source: Dong Chinese Dictionary

4. 他被指控为外国政府充当间谍。

   tā bèi zhǐ​kòng wéi wài​guó zhèng​fǔ chōng​dāng jiàn​dié.

   He was accused of spying for a foreign government.

   Source: Dong Chinese Dictionary

5. 他因为长期充当马夫而被警方逮捕。

   tā yīn​wèi cháng​qī chōng​dāng mǎ​fū ér bèi jǐng​fāng dài​bǔ.

   He was arrested by the police for acting as a pimp for a long time.

   Source: Dong Chinese Dictionary

6. 他由于充当敌人的走狗而受到唾弃。

   tā yóu​yú chōng​dāng dí​rén de zǒu​gǒu ér shòu​dào tuò​qì.

   He was despised for serving as a lackey for the enemy.

   Source: Dong Chinese Dictionary

7. 他在这个商业项目中充当中方代办的角色。

   tā zài zhè gè shāng​yè xiàng​mù zhōng chōng​dāng Zhōng​fāng dài​bàn de jué​sè.

   He acts as the Chinese representative in this business project.

   Source: Dong Chinese Dictionary

8. 诈骗集团利用失业青年充当车手到银行提款。

   zhà​piàn jí​tuán lì​yòng shī​yè qīng​nián chōng​dāng chē​shǒu dào yín​háng tí​kuǎn.

   The fraud syndicate used unemployed youth as money mules to withdraw cash from banks.

   Source: Dong Chinese Dictionary