释义 |
dwarf planet noun[ C ] uk /ˈdwɔːf ˌplæn.ɪt/ us /ˈdwɔːrf ˌplæn.ɪt/ a round mass of metal and rock or gas, moving around the Sun or another star, that is not large enough to be considered a planet. Dwarf planets in the solar system include Ceres, Pluto, and Eris.矮行星 SMART Vocabulary: related words and phrases Astronomy albedo Andromeda Aquarius Aries asteroid galaxy Gemini geostationary geosynchronous gibbous observatory orbit orbital Orion penumbra substellar sunspot supergiant supermassive supermoon
Instead, it is now called a dwarf planet, which means a small planet. |