3 sentences

1. 下级应当服从上级的指挥。

   xià​jí yīng​dāng fú​cóng shàng​jí de zhǐ​huī.

   Subordinates should follow the commands of their superiors.

   Source: Dong Chinese Dictionary

2. 古人认为，当下级发现上级有错时，应当直言规谏。

   gǔ​rén rèn​wéi, dāng xià​jí fā​xiàn shàng​jí yǒu cuò shí, yīng​dāng zhí​yán guī jiàn.

   Ancient people believed that when a subordinate finds a superior to be in error, they should offer direct admonition.

   Source: Dong Chinese Dictionary

3. 这项政策旨在简化下级部门的审批程序。

   zhè xiàng zhèng​cè zhǐ​zài jiǎn​huà xià​jí bù​mén de shěn​pī chéng​xù.

   This policy aims to simplify the approval procedures for subordinate departments.

   Source: Dong Chinese Dictionary