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.
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。The earth is one of the nine planets. All nine planets go round the sun the same way. Each of them also turns on its own axis.
地球是九大行星之一，这九大行星都围绕太阳运转，每个行星也绕着自转轴自转。Pluto, Eris and the many other Kuiper Belt objects are far too different to be lumped in with the eight official planets, he said.
冥王星、厄里斯和许多其他柯伊伯带的天体对于八大行星来说太不同了，无法归为一类，他说。They thus have sine waves with large amplitudes and short wavelengths, both of which make them easy to see.
这样，这些大行星就具有大振幅与短的波长“正弦波”曲线，而这两种特性让它们能更容易地被观察到。During the next few million years, lumps of that disk stuck together to form the familiar eight planets of the modern solar system.
在接下来的几百万年间，盘状物中的几块粘在一起形成了现代太阳系所熟悉的八大行星。They complained in reviews on the company's website that the sun, the eight planets and Pluto would often just not stay inflated.
他们在该公司网站上的用户评论中抱怨称，太阳、八大行星和冥王星常常会跑气。There are eight planets, at least thirty moons, and thousands of asteroids to be explored.
可供探险的有8大行星，至少有30个月亮和数以千计的小行星，其总面积约为地球面积的250倍。It is a sphere that revolves around the sun as part of an eight planet solar system.
它是一个球体，围绕着太阳运动，它是太阳系八大行星之一。The earth is one of mine planets which move in orbit round the sun.
地球是沿轨道围绕太阳运行的九大行星之一。