Applications can be brought down, updated, or refreshed for routine maintenance at almost any time of day, without affecting quality of service.

可以在一天中的任何时候将应用离线，更新应用，或者作为例行的维护工作刷新应用，而不必担心会影响服务的质量。

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Two space walks for maintenance work and component installation are scheduled during the 11-day mission, Discovery's last.

发现号的最后11天的任务中包括两次太空行走进行维护和部件安装工作。

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90-day releases, also called quarterly maintenance releases, contained few or no new features.

天发布版本，也称为“季度维护版本”包含少量新特性或者没有。

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Interim head coach Ron Rolston said Regehr was given a "maintenance day" to rest, but also hinted the Sabres might be trading a defenseman.

WSJ: LA Kings acquire D Robyn Regehr from Buffalo

They were without forward Rick Nash, who was given a "maintenance day, " and Darroll Powe, who was injured on Monday and is unlikely to play in Game 4.

WSJ: Rangers look to get even with Caps in Game 4

For day-to-day maintenance, keep a lookout for beauty schools: they need guinea pigs, you get freebies.

BBC: Beauty treatments abroad