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| for certain | |||
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| true; real | |||
| genuine; authentic; certain | |||
| certain (мат.) | |||
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| full well | |||
| reliably (it is reliably known that... Liv Bliss) | |||
| with absolute certainty (CNN, 2020 • we don't know with absolute certainty – это доподлинно неизвестно Alex_Odeychuk) | |||
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доподлинно : 10 短语, 4 学科 |
| 一般 | 7 |
| 修辞 | 1 |
| 过时/过时 | 1 |
| 非正式的 | 1 |