九改
Nine Revisions
以上为机器翻译结果，长、整句建议使用 人工翻译 。
由此看来，即使国际天文学联合会保住冥王星的行星地位，经典的太阳系九大行星理论也仍然要改，只是改法相反而已。
It seems that even if the IAU had kept Pluto's status as a planet, the classical theory of nine planets in the solar system would have had to be changed, but the other way around.
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