orbit

['ɔ:bit]

n.[C]
1.（天体运行的）轨道；（人造物体如卫星﹑ 航天器等飞行的）轨道
2.势力范围
v.[I,T]
1.在绕（某物）的轨道上运行；环绕轨道运行

形容词：orbital

同：	[n.] celestial orbit, compass, domain, electron orbit [v.] orb, revolve

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the (usually elliptical) path described by one celestial body in its revolution about another
- he plotted the orbit of the moon
[同] celestial orbit, orbit
a particular environment or walk of life
- his social sphere is limited
- it was a closed area of employment
- he's out of my orbit
[同] domain, field, area, arena, orbit, sphere

move in an orbit
- The moon orbits around the Earth
- The planets are orbiting the sun
- electrons orbit the nucleus
[同] orb, orbit, revolve

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