Grease traps shall be regularly maintained and cleaned out to ensure their effectiveness.

应定期维护和清理集油器以确保其有效性。

youdao

Over the last few years he has built and regularly maintained our hotel website and has offered many Suggestions to improve our online services.

在过去的几年中，他持续建设和维护我们酒店的网站，另外他还就我们的在线服务提出了很多的建议。

youdao

Mechanical and electrical equipment in pumping stations and water treatment works should be regularly maintained to ensure a stable water supply.

抽水站和滤水厂的机械及电机设备，须定期进行保养和维修，确保供水稳定。

youdao

The HPA said hot tubs posed a health risk if not regularly maintained.

BBC: JTF Warehouse

If it has been regularly maintained by a reputable maintenance organization or authorized manufactures service facility, there may be less to be concerned about.

FORBES: What's The Best Jet For You? (Part 3)

The aircraft are not spring chickens but they are impeccably maintained and regularly updated.

FORBES: The Royal Squadron