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| exploration spatiale (Sergei Aprelikov) | |||
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| recherche spatiale; recherches spatiales | |||
| recherche spatiale (Исследования всех аспектов окружающей среды за пределами земной атмосферы) | |||
| étude du cosmos | |||
| études spatiales | |||
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космическое исследование : 115 phrases in 15 subjects |
| Astronautics | 21 |
| Astronomy | 1 |
| Aviation | 52 |
| British usage, not spelling | 2 |
| General | 1 |
| High energy physics | 1 |
| Military | 9 |
| Name of organization | 3 |
| Nuclear physics | 1 |
| Politics | 6 |
| Scientific | 1 |
| Surveying | 1 |
| Technology | 12 |
| Ufology | 2 |
| United Nations | 2 |