当你移动得更快时，它的速度也会减慢，这意味着有一天宇航员可能会在太空中生存很长时间，以至于在遥远的将来他们才会回到地球。
It also slows down more as you move faster, which means astronauts some day may survive so long in space that they would return to an earth of the distant future.
他们说，它有一天可能取代美国航空航天局的航天飞机，向国际空间站运送宇航员和多达12吨的货物。
They say it could one day replace NASA's Space Shuttle to transport up to 12 tonnes of cargo and astronauts to the International Space Station.
一位俄罗斯的宇航员就因为能不用睡袋，在一天的工作结束后倒头就睡而声名远扬。
One Russian crew member is renowned for doing without a sleeping bag and falling asleep wherever he ends the day.
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