orbit

/ˈɔrbət/

the (usually elliptical) path described by one celestial body in its revolution about another

中文释义：轨道

The satellite was placed into a stable orbit around Earth.

卫星被送入环绕地球的稳定轨道。

The comet's elliptical orbit brings it close to the sun every 76 years.

彗星的椭圆轨道每76年使其接近太阳一次。