black box
чёрный ящик
Пример использования идиомы black box:
After the airplane crash the investigators tried to find the black box of the airplane.
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Другие идиомы:
- as black as a stack of black cats
- black and white
- black and blue
- black out
- put (something) down in black and white
- as black as coal
- pot calling the kettle black
- black eye
- as black as pitch
- as black as a sweep
- as black as night
- black market
- pitch-black
- as black as the ace of spades
- black sheep of the family