Perhaps an extra 20-minute nap when needed can help keep the experiment on track.
而额外的20分钟的小睡可以很好的解决这个问题。
Finally, the motion track of the astronaut during extra-vehicleis discussed.
最后讨论航天员出舱运动轨迹与初始速度关系。
Finally, the motion track of the astronaut during extra-vehicleis discussed.
最后讨论航天员出舱运动轨迹与初始速度关系。
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