 |
| English | Russian |
| I don't know for certain | я точно не знаю |
| I don't know for certain | я не уверен |
| know for certain | точно знать (With the captain’s report everything came together — secret bases, government cover-ups, global warfare, ancient aliens, pyramid power — to create the story of the Black Pyramid. The story that Campbell, if he followed any of the internet lore, surely planned his summer vacation around. No one knows for certain if Campbell believed any of this.  anomalien.com ART Vancouver) |
| know for certain | знать наверняка (With the captain’s report everything came together — secret bases, government cover-ups, global warfare, ancient aliens, pyramid power — to create the story of the Black Pyramid. The story that Campbell, if he followed any of the internet lore, surely planned his summer vacation around. No one knows for certain if Campbell believed any of this. anomalien.com ART Vancouver) |
| not to know for certain | не знать наверняка |