7 sentences

1. 他是经理的得力副手。

   tā shì jīng​lǐ de dé​lì fù​shǒu.

   He is the manager's capable assistant.

   Source: Dong Chinese Dictionary

2. 她是他最得力的助手。

   tā shì tā zuì dé​lì de zhù​shǒu.

   She is his most capable assistant.

   Source: Dong Chinese Dictionary

3. 他手下有几十名得力干将。

   tā shǒu​xià yǒu jǐ​shí míng dé​lì gàn​jiàng.

   He has dozens of capable subordinates.

   Source: Dong Chinese Dictionary

4. 他是我在工作中最为得力的助手。

   tā shì wǒ zài gōng​zuò zhōng zuì​wéi dé​lì de zhù​shǒu.

   He is my most capable assistant at work.

   Source: Dong Chinese Dictionary

5. 那个头目在冲突中失去了几个得力的手足。

   nà gè tóu​mù zài chōng​tū zhōng shī​qù le jǐ gè dé​lì de shǒu​zú.

   The leader lost several capable henchmen in the conflict.

   Source: Dong Chinese Dictionary

6. 他不仅是我的同事，更是我在事业上最得力的手臂。

   tā bù​jǐn shì wǒ de tóng​shì, gèng shì wǒ zài shì​yè shàng zuì dé​lì de shǒu​bì.

   He is not just my colleague, but my most capable right-hand man in my career.

   Source: Dong Chinese Dictionary

7. 由于指挥得力，工程提前完工了。

   yóu​yú zhǐ​huī dé​lì, gōng​chéng tí​qián wán​gōng le.

   Thanks to effective management, the project was completed ahead of schedule.

   Source: Dong Chinese Dictionary