noun🔗Share行星状星云 A planetary nebula."The astronomer pointed out the beautiful planetary nebula in the night sky. "这位天文学家指出了夜空中那个美丽的行星状星云。astronomyspaceChat with AIVocabulary GamePractice Reading
adjective🔗Share行星的，行星的轨道的 Of, or relating to planets, or the orbital motion of planets."Scientists study planetary orbits to understand the solar system's structure. "科学家研究行星的轨道，以了解太阳系的结构。astronomyspacescienceChat with AIVocabulary GamePractice Reading
adjective🔗Share地球的，行星的 Of, or relating to the Earth; terrestrial."The planetary movements of the family members were chaotic during the holiday season. "假期期间，家里每个人就像行星一样，到处乱转，毫无规律。astronomyspaceworldgeologyChat with AIVocabulary GamePractice Reading
adjective🔗Share全球的，行星的. Of, or relating to the whole Earth; global."The planetary concerns about climate change are affecting everyone's daily lives. "气候变化这一全球性的问题正在影响着每个人的日常生活。worldenvironmentChat with AIVocabulary GamePractice Reading
adjective🔗Share行星的，周转的。 (of a gear train) epicyclic"The watch's intricate planetary gear train allowed for smooth, precise adjustments of the second hand. "这块手表的精密行星齿轮系让秒针的调整既平滑又精准。astronomytechnicalChat with AIVocabulary GamePractice Reading
