They were willing to serve the fatherland in its hour of need.

他们愿意在祖国需要时为祖国服务。

《柯林斯英汉双解大词典》

But wishes were vain; or at best could serve only to amuse her in the hurry and confusion of the following hour.

可惜她这个愿望落空了，最多不过在这匆匆忙忙、慌慌乱乱的一个钟头里面，宽慰了一下她自己的心。

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Yes.it took more than an hour to serve the main course at our table.

是的，等了超过一小时我们的主菜才上桌。

youdao

Still bolder (and riskier): The network plans to serve up the stable of half-hour comedies as an all-new two-hour comedy block on Wednesday evenings.

FORBES: Media

For the next hour, serve held sway, with neither man facing a break point and the only moment of real drama came when Soderling missed his first two set points with nervous errors, before Federer netted a backhand on the third.

BBC: Robin Soderling stuns Roger Federer at French Open

He said it was an "honour" and a "privilege" to serve the country in "its hour of need".

BBC: Cameron speech: We are here to fight