| 单词 | manned spacecraft |
| 释义 | manned spacecraft The last time a manned spacecraft successfully made the journey was in 1972. Times, Sunday Times It launched its first unmanned satellite in 1999 and its first manned spacecraft in 2003. Times, Sunday Times He has pledged to have manned spacecraft capable of flights into deep space and ready to land on asteroids by 2025 - just 15 years from now. The Sun Even with the fastest manned spacecraft to be built, it would take astronauts almost five billion years to get there. Times, Sunday Times A requirement for a throttleable engine was new for manned spacecraft. Retrieved from Wikipedia CC BY-SA 3.0 |
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