Ramo suggests that if defenders have these black boxes then the U.S. aircraft would be helpless against enemy SAMs, and air superiority would be lost at stroke.

雷默暗示假如防卫者拥有这些黑匣子，那么美军战机对敌方的萨姆导弹将无能为力，空中优势也将转瞬即逝。

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Church bells pealed at the stroke of midnight.

午夜时钟一敲响，教堂的钟声便一声接一声地响起来。

《柯林斯英汉双解大词典》

They threatened to cancel the whole project at a stroke.

他们威胁要一下子砍掉整个项目。

《牛津词典》

The National Institute of Neurological Disorders and Stroke says many patients do well with no treatment at all.

VOA: special.2009.01.06

When I was a student here at Princeton, graduating, if you told me I was going to have any one of those three jobs at some point of my career, I would consider that an extraodianry stroke of good luck.

在我还在普林斯顿上学的时候，毕业的时候如果你跟我说,我将在职业生涯的某一点,拥有这三个职位中的一个，我就会觉得简直是,太幸运了。

普林斯顿公开课 - 国际座谈会课程节选

Chronic diseases have a major role in the healthcare costs, so if you look at these chronic diseases, heart disease, stroke, cancer and Diabetes we find that seven out of ten of all deaths are now due to chronic diseases, whereas, it was a very small fraction in 1900.

慢性疾病是医保费用中的一个大头,你看看这些慢性疾病,心脏病,中风,癌症和糖尿病,就会发现如今十分之七的死亡,都是源于慢性疾病,然而,这在1900年仅占很小一部分

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So at a stroke, one important source of credit to the economy will be eliminated.

BBC: The rescue of Cyprus won't feel like one to its people

Big Bang moved them at a stroke from that to screen-based and telephone trading.

BBC: Margaret Thatcher: How her changes affected your finances

It also solves, entirely and at a stroke, that offshoring of profits by US corporations.

FORBES: Finally! A Sensible Idea About US Tax Policy