1. [大]行星：[大]行星 major planet | 主脊 major ridge | 主槽 major trough

noun

1. (astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun
viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction

Synonym: planet