 |
| Russian | English |
| на рубеже | at the boundary between and (двух периодов; The dinosaurs became extinct at the boundary between the Mesozoic and the Tertiary period. ArcticFox) |
|
| Russian | English |
| на рубеже | at the boundary between and (двух периодов; The dinosaurs became extinct at the boundary between the Mesozoic and the Tertiary period. ArcticFox) |