5 sentences

1. 他在学术研究上很专。

   tā zài xué​shù yán​jiū shàng hěn zhuān.

   He is very specialized in his academic research.

   Source: Dong Chinese Dictionary

2. 专家们正在寻找这条大河的发源地。

   zhuān jiā men zhèng​zài xún​zhǎo zhè tiáo dà​hé de fā​yuán​dì.

   Experts are looking for the source of this great river.

   Source: Dong Chinese Dictionary

3. 这部短片是专为当地的老人拍摄的。

   zhè bù duǎn​piàn shì zhuān wèi dāng​dì de lǎo​rén pāi​shè de.

   This short film was made specifically for the local elderly.

   Source: Dong Chinese Dictionary

4. 市面上有很多专为左撇子设计的吉他，方便他们练习弹奏。

   shì​miàn shàng yǒu hěn​duō zhuān wèi zuǒ​piě​zi shè​jì de jí​tā, fāng​biàn tā​men liàn​xí tán​zòu.

   There are many guitars on the market designed specifically for left-handed people, making it convenient for them to practice.

   Source: Dong Chinese Dictionary

5. 他做事非常专，从来不会因为杂事分心。

   tā zuò​shì fēi​cháng zhuān, cóng​lái bù huì yīn​wèi zá​shì fēn​xīn.

   He is very focused on his work and never gets distracted by trivial matters.

   Source: Dong Chinese Dictionary