At the first stroke it will be 9 o'clock exactly.

等到钟敲第一下时就是9点整。

《牛津词典》

Keats's origins counted as his first stroke of bad luck.

济慈的出身可以算是他的厄运的头一次打击。

youdao

The average age at which American women have a first stroke is 72; Happy's was at 105.

美国妇女第一次中风的平均年龄是72岁，而Happy是105岁。

youdao

But experts generally advise against using the drug if more than three hours have passed after the first signs of a stroke.

VOA: special.2009.09.22

That you put together diseases of the heart, cancer, stroke, and then chronic respiratory diseases, those first top four are accounting for a huge number of deaths.

心脏病,癌症,中风,和慢性呼吸道疾病,这四大疾病加起来造成了大量死亡

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But traditional guidelines say not to use tPA if more than three hours have passed after the first signs of a stroke.

VOA: special.2009.08.12

He had his first stroke in 2010 and two more followed in 2011.

BBC: Fans rally round Durutti Column star Vini Reilly

He was compelled to act, and his first stroke of luck was that he picked up no bad habits from teachers.

ECONOMIST: Theatre history

She was wearing a beautiful red and gold jacket and she was wearing, had taken out her rubies and, and she looked almost, I mean she did look as she did before she had her very first stroke and she was in fantastic form and that is actually how I would like to remember and will remember her.

BBC: News | BREAKFAST WITH FROST | Interview with Lady Elizabeth Shakerley