The window had been replaced last week during routine maintenance.

那窗在上星期的例行检修中已被换掉了。

《柯林斯英汉双解大词典》

Or is the site just down for routine maintenance?

或者网站只是进行日常维护？

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Some systems may require routine maintenance to continue running efficiently.

有些系统可能需要例行的维护才能继续高效地运行。

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Martin Hill, routine maintenance manager, said the council had not received any enquiries about these potholes.

BBC: Potholes 'fix me' pleas appear in Swanage

Most of the multi-billion-pound investment programme that it trumpets is routine maintenance rather than upgrading.

ECONOMIST: Mending Britain��s rotten railways

Two of the Americans on board are already scheduled to conduct a spacewalk on Thursday for routine maintenance.

BBC: Cooling system fault hits International Space Station