称量
To keep this spinning disk of gas from violently flying apart in all directions, there had to be a colossal mass concentrated at its center, weighing as much as2 to3 billion suns!
为了防止暴力在各个方向飞行除了这种气体旋转盘,必须有一个庞大的群众集中在它的中心,重量多达2至3亿个太阳!
Most of its mass is expected to burn up as the craft re-enters the atmosphere but 20 or 30 pieces of small debris collectively weighing about 200kg could reach Earth.
探测器大多数的碎片都会在再次进入大气层时燃烧殆尽,但其总重约200公斤的20到30个小型残骸将坠入地球。
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