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| English | Russian |
| at the right time | в нужное время (T) |
| at the same time | одновременно (At the same time it signed its strategic agreement with RusHydro in December, the company reached an agreement to upgrade power stations belonging to Mosenergo, as well. TMT Alexander Demidov) |
| at the same time | при (at the same time keeping a relatively high unwinding speed–при сохранении сравнительно высокой скорости размотки Мирослав9999) |
| the number of permutations of 16 taken 10 at a time | число перестановок из 16 по 10 |