On July 6, 1988, as part of routine maintenance, technicians removed and checked safety valves which were essential in preventing dangerous build-up of liquid gas.

在1988年7月6号，作为日常保养的一部分，技术人员检查阀门的安全，这在预防液态气体的危险中尤为重要。

youdao

Moistening maintenance: Containing moisturizing compositions, it helps preventing the occurrence of water insufficiency and desquamation.

保湿： 含保湿成份， 帮助预防缺水及脱皮现象的出现。

youdao

Conclusion In order to preventing major depression from recurrence, we should pay attention to the drug maintenance therapy and improve some effect factors as well.

结论预防抑郁症的复发，既要重视药物维持性治疗，又要改善其他方面的影响因素。

youdao

The government argues that the higher costs of private borrowing are outweighed by the transfer of risk, preventing expensive construction overruns and maintenance bills.

ECONOMIST: The Treasury admits to problems with the PFI