on the run, in full flight
Вор вы́хватил у же́нщины су́мочку и рвану́л наутёк.
The thief snatched the woman's handbag and took to his heels.
Кошка кинулась наутёк при виде собаки.
The cat took off at the sight of the dog.
Воры бросились наутёк от полиции.
The thieves took off at full speed from the police.
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