圓軌道

circular orbit (in astronomy and in astronautics)

circle / round / circular / spherical / (of the moon) full / unit of Chinese currency (yuan) / tactful / to make consistent and whole (the narrative of a dream or a lie)

course / path / track / rail

track (for trains etc) / orbit (of a satellite) / (fig.) a person's established path in life / desired trajectory (of a business or other endeavor) / (audio engineering) track / (quantum mechanics) orbital

road / path / CL:條|条[tiao2],股[gu3] / principle / truth / morality / reason / skill / method / Dao (of Daoism) / to say / to speak / to talk / classifier for long thin things (rivers, cracks etc), barriers (walls, doors etc), questions (in an exam etc), commands, courses in a meal, steps in a process / (old) circuit (administrative division)