noun · the curved path of a celestial object or spacecraft around a star, planet, or moon

这颗卫星正在绕地球轨道运行。

noun · a person's established life direction or the desired trajectory of a business or project

他的生活终于回到了正常的轨道。

noun · an individual recording channel or path in audio engineering

录音师正在合并不同的音频轨道。

noun · the mathematical description of the location and behavior of an electron in quantum mechanics

电子在原子轨道中运动。

noun · a physical rail or path for trains, trams, or other vehicles

火车沿着轨道缓慢行驶。