Значение идиомы brain drain

[brain drain] {n.}, {informal} 1. The loss of the leading intellectuals and researchers of a country due to excessive emigration to other countries where conditions are better.

Britain suffered a considerable brain drain to the United States after World War II.

2. An activity requiring great mental concentration resulting in fatigue and exhaustion

That math exam I took was a regular brain drain.


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Значение идиомы brain drain