| 1. | That ' s easy . everyone knows that there are nine
很简单。大家都知道有九大行星。 |
| 2. | Scale of the nine planets of the solar system
太阳系九大行星的大小比较 |
| 3. | Do you know the nine major planets
你知道九大行星吗？ |
| 4. | What mysteries do you know about the nine planets in the solar system
关于太阳系里的九大行星，你知道哪些奥秘？ |
| 5. | Jupiter , saturn , uranus and neptune are the giant planets of our solar system
木星土星天王星及海王星，是太阳系九大行星中的巨无霸。 |
| 6. | The last two planets , neptune and pluto were discovered in 1846 and 1930 respectively
九大行星中的最后两颗行星海王星和冥王星，分别在1846年和1930年发现。 |
| 7. | Pluto is not classified into either the terrestrial or jovian planets due to its special features
冥王星可算是九大行星中的蝙蝠，它不是类地行星，亦不属于类木行星。 |
| 8. | Faster still and it can escape the immense pull of our sun , the force that holds the planets in place
再快一点的话,它甚至可以摆脱太阳的巨大引力.这就是太阳能够固定九大行星的力量 |
| 9. | Apart from the major planets , there are asteroids or minor planets , comets and many other things in our solar system
在太阳系中，除了九大行星外，还有很多好像小行星彗星等小成员。 |
| 10. | The man literally responsible for pluto s official demotion , to deliver a lecture at the faculty of science distinguished lecture series
究竟是谁令冥王星地位不保，将其从九大行星的名单上剔除？ |
