1. | [c] 行星a large round object in space that moves around a star (such as the sun) and receives light from it |
the planets of our solar system 太阳系的行星 | |
the planet Earth/Venus/Mars 地球;金星;火星 |
2. | [sing] 地球(尤指环境)used to mean ‘the world’, especially when talking about the environment |
the battle to save the planet 拯救地球的战斗 |