请按时归还图书馆的书。

Qǐng ànshí guīhuán túshūguǎn de shū.

Please return the library books on time.

公司要求员工在离职前归还所有办公设备。

Gōngsī yāoqiú yuángōng zài lízhí qián guīhuán suǒyǒu bàngōng shèbèi.

The company requires employees to return all office equipment before leaving their job.