4 sentences

1. 他的能量很大，能解决很多棘手的问题。

   tā de néng​liàng hěn dà, néng jiě​jué hěn​duō jí​shǒu de wèn​tí.

   He has a lot of influence and can solve many thorny problems.

   Source: Dong Chinese Dictionary

2. 他处理这件棘手的事情显得绰绰有裕。

   tā chǔ​lǐ zhè jiàn jí​shǒu de shì​qing xiǎn​de chuò​chuò​yǒu​yù.

   He handled this thorny matter with more than enough ease.

   Source: Dong Chinese Dictionary

3. 他在这次项目中大显神通，解决了许多棘手的问题。

   tā zài zhè cì xiàng​mù zhōng dà​xiǎn​shén​tōng, jiě​jué le xǔ​duō jí​shǒu de wèn​tí.

   He showed great prowess in this project, solving many thorny problems.

   Source: Dong Chinese Dictionary

4. 这是一个非常棘手的问题，我们需要更多时间来处理。

   zhè shì yī gè fēi​cháng jí​shǒu de wèn​tí, wǒ​men xū​yào gèng duō shí​jiān lái chǔ​lǐ.

   This is a very thorny issue, and we need more time to deal with it.

   Source: Dong Chinese Dictionary