Question of the Day #472

"At a stroke, the president succeeded in alienating the Danish public, baffling the government in Copenhagen, and perhaps making it more difficult for the US to build up its military presence at Thule in northern Greenland."
From the 2nd paragraph of this article at European Council of Foreign Relations.

上記の文で、at a strokeの意味は？
In the sentence above, what does "at a stroke" mean?

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Write your answer in the Comments.

明日、ここに答えを書きます。
I will add the answer and other remarks here tomorrow.

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解答

意味：
英辞郎によると、

一撃で、一気（呵成）に、一挙に

Answer

According to The Free Dictionary:

All at once, with a single decisive or powerful action.

Examples

• When the economy crashed, thousands of people lost their jobs, their homes, and their pensions at a single stroke.
• As the two leaders ratified the treaty, 10 years of civil war ended at a stroke.
• The disease wiped out 40 million rabbits at a stroke.
• How can Britain reduce its prison population in one stroke?
• They added 230 customers to their list at a stroke.

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