释义 |
Pluto noun[ S ] uk /ˈpluː.təʊ/ us /ˈpluː.t̬oʊ/ a dwarf planet that is farther away from the sun than Neptune, and is the second largest dwarf planet in the solar system冥王星(第九大行星,离太阳最远,比海王星还远) SMART Vocabulary: related words and phrases Astronomy albedo Andromeda Aquarius Aries asteroid galactic galaxy Gemini geostationary geosynchronous nova observatory orbit orbital Orion substellar sunspot supergiant supermassive supermoon
Astronomers, the scientists who study space and planets, decided that Pluto was too small and too far away from our sun to be called a planet. Pluto is still there, but it is no longer a planet. The spacecraft are now past Pluto and out of the heliosphere – the area around the Sun.
Pluto | American Dictionary Pluto noun[ U ] us/ˈplu·t̬oʊ/ a large, round mass of matter ninth in order of distance from the sun, after Neptune, considered in the past to be a planet |