为了保证系统稳定运行，技术人员晚上也要值班监控。

Wèile bǎozhèng xìtǒng wěndìng yùnxíng, jìshù rényuán wǎnshang yě yào zhíbān jiānkòng.

To ensure the system runs stably, technicians have to be on duty at night to monitor it.

如果没有按时维护，机器在运行过程中就可能出现故障。

Rúguǒ méiyǒu ànshí wéihù, jīqì zài yùnxíng guòchéng zhōng jiù kěnéng chūxiàn gùzhàng.

If it is not maintained on time, the machine may malfunction during operation.