4 sentences

1. 他忠于自己的职守。

   tā zhōng yú zì​jǐ de zhí​shǒu.

   He is loyal to his duties.

   Source: Dong Chinese Dictionary

2. 他因怠于职守而受到处分。

   tā yīn dài yú zhí​shǒu ér shòu​dào chǔ​fèn.

   He was disciplined for neglecting his duties.

   Source: Dong Chinese Dictionary

3. 他因为玩忽职守而受到了严厉的处分。

   tā yīn​wèi wán​hū zhí​shǒu ér shòu​dào le yán​lì de chǔ​fèn.

   He received a severe punishment for dereliction of duty.

   Source: Dong Chinese Dictionary

4. 战士们日夜坚守在自己的职守上。

   zhàn​shì men rì​yè jiān​shǒu zài zì​jǐ de zhí​shǒu shàng.

   The soldiers remained at their posts day and night.

   Source: Dong Chinese Dictionary