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| English | Russian |
| keep one's mouth firmly shut | не болтать языком (The two men told Wilson – in stern and creepy fashion – that all he had seen in the skies above was a Soviet satellite orbiting the Earth; specifically Cosmos 408. And, that he had better keep his mouth firmly shut. (mysteriousuniverse.org) ART Vancouver) |
| keep your mouth shut! | не болтай языком! (ART Vancouver) |