一千年来它们的体积逐步地增加，然后忽然间缩小了，因为分子阀取代了晶体管，使得最大的行星ac都缩小到了只有一艘飞船的一半体积。

In place of transistors, had come molecular valves so that even the largest Planetary ac could be put into a space only half the volume of a spaceship.

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一千年来它们的体积逐步地增加，然后忽然间缩小了，因为分子阀取代了晶体管，使得最大的行星ac都缩小到了只有一艘飞船的一半体积。

In place of transistors, had come molecular valves so that even the largest Planetary ac could be put into a space only half the volume of a spaceship.

youdao