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》

He recalled her devotion to her husband during his hour of need.

他回想起她在丈夫需要帮助时所做出的无私奉献。

《柯林斯英汉双解大词典》

He helped me in my hour of need.

在我生活困难的时候他帮助了我。

《牛津词典》

"We cannot fail to assist Sudan during her hour of need."

VOA: standard.2010.03.21

So, if we're trying to figure out the wavelength of a Matsuzaka fastball, we need to consider the velocity first, which is 42 miles per hour.

如果我们尝试计算一个,松阪发出快球的波长，我们首先需要考虑速度，每小时为42英里。

麻省理工公开课 - 化学原理课程节选

And Frankfurter Rundschau said he was the German "saviour in our hour of need".

BBC: Joy and relief for Germans

You need to know that America will be with you in your hour of need.

WHITEHOUSE: President Obama Delivers a Statement on Hurricane Irene

And we will continue to stand with the people of Japan in their greatest hour of need.

WHITEHOUSE: Weekly Address: American Jobs Through Exports to Latin America | The White House