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| English | Russian |
| open an investigation | возбудить дело (We have received confirmation the FBI has opened an investigation into potential criminal activities surrounding several online accounts. • The Liverpool City Police has opened an investigation and some forensic engineers have been called to the site. 4uzhoj) |
| open-and-shut case | дело без осложнений (Bob's death was an open-and-shut case of suicide. He left a suicide note. Val_Ships) |