1.The Pluto used to be the ninth planet in the solar system, but now it is listed as the Dwarf Planet.
冥王星曾经是太阳系的第九颗行星，但是现在被列为矮行星。
2.Later it was thought as the ninth planet and the farthest one from the sun in the solar system.
后来，人们把冥王星作为太阳系的第九大行星，也是距离太阳最远的一颗大行星。
3.Pluto was stripped of its designation as the solar system's ninth planet.
冥王星原来是其作为太阳系九大行星之一被剥夺。
4.No one knows for sure, but it is probably about 140 degrees below zero Celsius on this ninth planet.
没有人确切知道，但估计这第九个行星上的温度大约是摄氏零下140度。
5.But when the second man to jam the ninth planet when he burst out laughing, and died.
但是当第二个人塞到第九颗的时候他就突然大笑起来，也死了。
6.Pluto is the ninth planet in our solar system and the furthest from the sun.
冥王星是离太阳最远的第九颗行星。
7.People have long debated about considering it the ninth planet in our solar system.
长期以来人们就认为这是我们太阳系第九行星。
8.After Pluto was found in 1930, people took it as the ninth planet in our solar system.
自从1930年冥王星被发现后，人们就把它当作太阳系的第九大行星。