一个宇宙飞行员希望确定出他接近月球时的逼近速度。
A space navigator wishes to determine his velocity of approach as he nears the moon.
我也想去未来之国，当一名宇宙飞行员，象杨利伟一样。
I also want to "future state", when a cosmonaut, the same as Yang Liwei.
在太空中，计算机帮助宇航员和飞行员控制一艘宇宙飞船的飞行的速度和方向。
In space, computers help astronauts and pilots control the speed and direction of a spaceship's flight.
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