5 sentences

1. 他是我们部门的主任。

   tā shì wǒ​men bù​mén de zhǔ​rèn.

   He is the head of our department.

   Source: Dong Chinese Dictionary

2. 我是总统办公室主任。

   wǒ shì zǒng​tǒng bàn​gōng​shì zhǔ​rèn.

   I'm the chief of staff of the president's office.

   Source: OpenSubtitles

3. 我找社会学系主任谈过。

   wǒ zhǎo shè​huì​xué​xì zhǔ​rèn tán guo.

   I spoke to the head of the Sociology Department.

   Source: OpenSubtitles

4. 我是诊所主任。

   wǒ shì zhěn​suǒ zhǔ​rèn.

   I'm the Clinic Director.

   Source: OpenSubtitles

5. 殷医生是这家医院的外科主任，他在同事和病人口中口碑极好。

   Yīn yī​shēng shì zhè jiā yī​yuàn de wài​kē zhǔ​rèn, tā zài tóng​shì hé bìng​rén kǒu​zhōng kǒu​bēi jí hǎo.

   Dr. Yin is the chief of surgery at this hospital and has an excellent reputation among both his colleagues and patients.

   Source: Dong Chinese Dictionary