This morning, there was a routine maintenance event in one of our European data centers.

今天早上，在我们其中一个欧洲数据中心，举办了一个例行的维护活动。

youdao

Generally, an application can create event listeners with event handlers through multiple connection ports, but this is costly in terms of network resources and maintenance.

通常，应用程序可以通过多个连接端口用事件处理程序创建事件侦听程序，但是这在网络资源和维护方面花费较大。

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In the pre-Web days, thick client application models were based on widgets, events and event handlers which often resulted in complex event chains which lead to maintenance nightmares.

在之前的Web开发中，厚重的客户端应用模型都是基于Widget、事件以及事件处理器，这经常会导致复杂的事件处理链，而这一切会造成维护的梦魇。

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That bill, which is opposed by the Republican majority in the Senate who favor a less comprehensive measure, would allow medical patients to sue their health maintenance organization or insurance company in the event a coverage decision caused direct, documentable harm.

CNN: Bush, Gore stalk stage and each other in final debate

An emergency backup generator is only allowed to operate for 200 hours every year and only in the event of an emergency power failure or for routine testing and maintenance.

FORBES: Backup Generators Are the Bad and Ugly of Decentralized Energy

We have a contractual structure which we published in January last year, which sets out the requirement for the maintenance of a contestable framework and for us to have intervention rights in the event of supplier failure.

BBC