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(as) clean as a whistle
01
идеально чистый, без единого пятна
completely unstained and free from dirt, thus extremely clean and tidy
идиома
неформальное
Примеры
After the thorough scrubbing, the kitchen was clean as a whistle, with every surface shining and devoid of any grease or stains.
К приходу гостей квартира была идеально чистой.
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