为推动该飞船完成50年抵达的任务所需速度所耗能量之大，人们几乎无法想象。
The energy required to push a spacecraft up to the speed needed to get to the star within 50 years was so great as to be barely conceivable.
为推动该飞船完成50年抵达的任务所需速度所耗能量之大，人们几乎无法想象。
The energy required to push a spacecraft up to the speed needed to get to the star within 50 years was so great as to be barely conceivable.
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