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| English | Russian |
| do an in-depth study | прорабатывать (To build you a brand, we do an in depth study on your business strategy, audience, and customers and how you would like to be perceived. The BSc dissertation project is designed to allow students to do an in-depth study of an area in demography that they are particularly interested in, and to ... Alexander Demidov) |
| in-depth study | детальное исследование |
| in-depth study | детальное изучение |
| make an in-depth study | прорабатывать (Scientists made an in-depth study of the behaviour of chimps in the wild. Found on  bbc.co.uk Alexander Demidov) |
| study in depth | прорабатывать (Alexander Demidov) |
| with in-depth study of English | с углублённым изучением английского языка (Chu) |